diff --git a/quickstep/res/layout/overview_actions_container.xml b/quickstep/res/layout/overview_actions_container.xml
index dd8afc2..1c7b509 100644
--- a/quickstep/res/layout/overview_actions_container.xml
+++ b/quickstep/res/layout/overview_actions_container.xml
@@ -51,7 +51,6 @@
             style="@style/OverviewActionButton"
             android:layout_width="wrap_content"
             android:layout_height="wrap_content"
-            android:drawableStart="@drawable/ic_split_screen"
             android:text="@string/action_split"
             android:theme="@style/ThemeControlHighlightWorkspaceColor"
             android:visibility="gone" />
diff --git a/quickstep/src/com/android/launcher3/taskbar/FallbackTaskbarUIController.java b/quickstep/src/com/android/launcher3/taskbar/FallbackTaskbarUIController.java
index 90c035f..f1e6747 100644
--- a/quickstep/src/com/android/launcher3/taskbar/FallbackTaskbarUIController.java
+++ b/quickstep/src/com/android/launcher3/taskbar/FallbackTaskbarUIController.java
@@ -60,6 +60,7 @@
 
     @Override
     protected void onDestroy() {
+        super.onDestroy();
         mRecentsActivity.setTaskbarUIController(null);
         mRecentsActivity.getStateManager().removeStateListener(mStateListener);
     }
diff --git a/quickstep/src/com/android/launcher3/taskbar/LauncherTaskbarUIController.java b/quickstep/src/com/android/launcher3/taskbar/LauncherTaskbarUIController.java
index 7d23439..2622700 100644
--- a/quickstep/src/com/android/launcher3/taskbar/LauncherTaskbarUIController.java
+++ b/quickstep/src/com/android/launcher3/taskbar/LauncherTaskbarUIController.java
@@ -99,6 +99,7 @@
 
     @Override
     protected void onDestroy() {
+        super.onDestroy();
         onLauncherResumedOrPaused(false);
         mTaskbarLauncherStateController.onDestroy();
 
diff --git a/quickstep/src/com/android/launcher3/taskbar/NavbarButtonsViewController.java b/quickstep/src/com/android/launcher3/taskbar/NavbarButtonsViewController.java
index b39d28f..319833d 100644
--- a/quickstep/src/com/android/launcher3/taskbar/NavbarButtonsViewController.java
+++ b/quickstep/src/com/android/launcher3/taskbar/NavbarButtonsViewController.java
@@ -31,6 +31,7 @@
 import static com.android.systemui.shared.system.QuickStepContract.SYSUI_STATE_NOTIFICATION_PANEL_EXPANDED;
 import static com.android.systemui.shared.system.QuickStepContract.SYSUI_STATE_OVERVIEW_DISABLED;
 import static com.android.systemui.shared.system.QuickStepContract.SYSUI_STATE_QUICK_SETTINGS_EXPANDED;
+import static com.android.systemui.shared.system.QuickStepContract.SYSUI_STATE_SCREEN_PINNING;
 
 import android.animation.ArgbEvaluator;
 import android.animation.ObjectAnimator;
@@ -86,6 +87,7 @@
     private static final int FLAG_DISABLE_RECENTS = 1 << 8;
     private static final int FLAG_DISABLE_BACK = 1 << 9;
     private static final int FLAG_NOTIFICATION_SHADE_EXPANDED = 1 << 10;
+    private static final int FLAG_SCREEN_PINNING_ACTIVE = 1 << 10;
 
     private static final int MASK_IME_SWITCHER_VISIBLE = FLAG_SWITCHER_SUPPORTED | FLAG_IME_VISIBLE;
 
@@ -152,7 +154,9 @@
         mPropertyHolders.add(new StatePropertyHolder(
                 mControllers.taskbarViewController.getTaskbarIconAlpha()
                         .getProperty(ALPHA_INDEX_KEYGUARD),
-                flags -> (flags & FLAG_KEYGUARD_VISIBLE) == 0, MultiValueAlpha.VALUE, 1, 0));
+                flags -> (flags & FLAG_KEYGUARD_VISIBLE) == 0
+                        && (flags & FLAG_SCREEN_PINNING_ACTIVE) == 0,
+                MultiValueAlpha.VALUE, 1, 0));
 
         mPropertyHolders.add(new StatePropertyHolder(mControllers.taskbarDragLayerController
                 .getKeyguardBgTaskbar(),
@@ -294,6 +298,7 @@
         int shadeExpandedFlags = SYSUI_STATE_NOTIFICATION_PANEL_EXPANDED
                 | SYSUI_STATE_QUICK_SETTINGS_EXPANDED;
         boolean isNotificationShadeExpanded = (sysUiStateFlags & shadeExpandedFlags) != 0;
+        boolean isScreenPinningActive = (sysUiStateFlags & SYSUI_STATE_SCREEN_PINNING) != 0;
 
         // TODO(b/202218289) we're getting IME as not visible on lockscreen from system
         updateStateForFlag(FLAG_IME_VISIBLE, isImeVisible);
@@ -303,6 +308,7 @@
         updateStateForFlag(FLAG_DISABLE_RECENTS, isRecentsDisabled);
         updateStateForFlag(FLAG_DISABLE_BACK, isBackDisabled);
         updateStateForFlag(FLAG_NOTIFICATION_SHADE_EXPANDED, isNotificationShadeExpanded);
+        updateStateForFlag(FLAG_SCREEN_PINNING_ACTIVE, isScreenPinningActive);
 
         if (mA11yButton != null) {
             // Only used in 3 button
diff --git a/quickstep/src/com/android/launcher3/taskbar/TaskbarActivityContext.java b/quickstep/src/com/android/launcher3/taskbar/TaskbarActivityContext.java
index cb9d4a4..692352b 100644
--- a/quickstep/src/com/android/launcher3/taskbar/TaskbarActivityContext.java
+++ b/quickstep/src/com/android/launcher3/taskbar/TaskbarActivityContext.java
@@ -361,6 +361,7 @@
         mControllers.taskbarStashController.updateStateForSysuiFlags(systemUiStateFlags, fromInit);
         mControllers.taskbarScrimViewController.updateStateForSysuiFlags(systemUiStateFlags,
                 fromInit);
+        mControllers.navButtonController.updateSysuiFlags(systemUiStateFlags);
     }
 
     /**
diff --git a/quickstep/src/com/android/launcher3/taskbar/TaskbarLauncherStateController.java b/quickstep/src/com/android/launcher3/taskbar/TaskbarLauncherStateController.java
index 152b255..f3c8cf3 100644
--- a/quickstep/src/com/android/launcher3/taskbar/TaskbarLauncherStateController.java
+++ b/quickstep/src/com/android/launcher3/taskbar/TaskbarLauncherStateController.java
@@ -15,7 +15,6 @@
  */
 package com.android.launcher3.taskbar;
 
-import static com.android.launcher3.LauncherState.HOTSEAT_ICONS;
 import static com.android.launcher3.taskbar.TaskbarStashController.FLAG_IN_APP;
 import static com.android.launcher3.taskbar.TaskbarStashController.FLAG_IN_STASHED_LAUNCHER_STATE;
 import static com.android.launcher3.taskbar.TaskbarStashController.TASKBAR_STASH_DURATION;
@@ -68,9 +67,6 @@
     private int mPrevState;
     private int mState;
 
-    private LauncherState mTargetStateOverride = null;
-    private LauncherState mTargetStateOverrideForStateTransition = null;
-
     private boolean mIsAnimatingToLauncherViaGesture;
     private boolean mIsAnimatingToLauncherViaResume;
 
@@ -79,7 +75,6 @@
 
                 @Override
                 public void onStateTransitionStart(LauncherState toState) {
-                    mTargetStateOverrideForStateTransition = toState;
                     updateStateForFlag(FLAG_TRANSITION_STATE_START_STASHED,
                             toState.isTaskbarStashed());
                     applyState();
@@ -134,18 +129,6 @@
         updateStateForFlag(FLAG_RECENTS_ANIMATION_RUNNING, true);
         animatorSet.play(stashController.applyStateWithoutStart(duration));
         animatorSet.play(applyState(duration, false));
-        animatorSet.addListener(new AnimatorListenerAdapter() {
-            @Override
-            public void onAnimationEnd(Animator animator) {
-                mTargetStateOverride = null;
-                animator.removeListener(this);
-            }
-
-            @Override
-            public void onAnimationStart(Animator animator) {
-                mTargetStateOverride = toState;
-            }
-        });
 
         TaskBarRecentsAnimationListener listener = new TaskBarRecentsAnimationListener(callbacks);
         callbacks.addListener(listener);
@@ -284,7 +267,6 @@
                         // Reset hotseat alpha to default
                         mLauncher.getHotseat().setIconsAlpha(1);
                     }
-                    mTargetStateOverrideForStateTransition = null;
                 }
 
                 @Override
@@ -296,8 +278,6 @@
             animatorSet.play(mIconAlignmentForLauncherState.animateToValue(
                     getCurrentIconAlignmentRatioForLauncherState(),
                     isTransitionStateStashed ? 0 : 1));
-        } else {
-            mTargetStateOverrideForStateTransition = null;
         }
     }
 
@@ -318,20 +298,14 @@
     }
 
     private void onIconAlignmentRatioChangedForStateTransition() {
-        onIconAlignmentRatioChanged(
-                mTargetStateOverrideForStateTransition != null
-                        ? mTargetStateOverrideForStateTransition
-                        : mLauncher.getStateManager().getState(),
-                this::getCurrentIconAlignmentRatioForLauncherState);
+        onIconAlignmentRatioChanged(this::getCurrentIconAlignmentRatioForLauncherState);
     }
 
     private void onIconAlignmentRatioChanged() {
-        onIconAlignmentRatioChanged(mTargetStateOverride != null ? mTargetStateOverride
-                : mLauncher.getStateManager().getState(), this::getCurrentIconAlignmentRatio);
+        onIconAlignmentRatioChanged(this::getCurrentIconAlignmentRatio);
     }
 
-    private void onIconAlignmentRatioChanged(LauncherState state,
-            Supplier<Float> alignmentSupplier) {
+    private void onIconAlignmentRatioChanged(Supplier<Float> alignmentSupplier) {
         if (mControllers == null) {
             return;
         }
@@ -341,7 +315,8 @@
 
         mTaskbarBackgroundAlpha.updateValue(1 - alignment);
 
-        setIconAlpha(state, alignment);
+        // Switch taskbar and hotseat in last frame
+        setTaskbarViewVisible(alignment < 1);
     }
 
     private float getCurrentIconAlignmentRatio() {
@@ -352,15 +327,6 @@
         return mIconAlignmentForLauncherState.value;
     }
 
-    private void setIconAlpha(LauncherState state, float progress) {
-        if ((state.getVisibleElements(mLauncher) & HOTSEAT_ICONS) != 0) {
-            // If the hotseat icons are visible, then switch taskbar in last frame
-            setTaskbarViewVisible(progress < 1);
-        } else {
-            mIconAlphaForHome.setValue(1 - progress);
-        }
-    }
-
     private void setTaskbarViewVisible(boolean isVisible) {
         mIconAlphaForHome.setValue(isVisible ? 1 : 0);
     }
diff --git a/quickstep/src/com/android/launcher3/taskbar/TaskbarManager.java b/quickstep/src/com/android/launcher3/taskbar/TaskbarManager.java
index 56e9429..3cdcdf7 100644
--- a/quickstep/src/com/android/launcher3/taskbar/TaskbarManager.java
+++ b/quickstep/src/com/android/launcher3/taskbar/TaskbarManager.java
@@ -29,8 +29,8 @@
 import android.content.res.Configuration;
 import android.hardware.display.DisplayManager;
 import android.net.Uri;
+import android.os.Handler;
 import android.provider.Settings;
-import android.util.Log;
 import android.view.Display;
 
 import androidx.annotation.NonNull;
@@ -93,7 +93,8 @@
         Display display =
                 service.getSystemService(DisplayManager.class).getDisplay(DEFAULT_DISPLAY);
         mContext = service.createWindowContext(display, TYPE_NAVIGATION_BAR_PANEL, null);
-        mNavButtonController = new TaskbarNavButtonController(service);
+        mNavButtonController = new TaskbarNavButtonController(service,
+                SystemUiProxy.INSTANCE.get(mContext), new Handler());
         mUserSetupCompleteListener = isUserSetupComplete -> recreateTaskbar();
         mComponentCallbacks = new ComponentCallbacks() {
             private Configuration mOldConfig = mContext.getResources().getConfiguration();
diff --git a/quickstep/src/com/android/launcher3/taskbar/TaskbarNavButtonController.java b/quickstep/src/com/android/launcher3/taskbar/TaskbarNavButtonController.java
index ae23eda..d233365 100644
--- a/quickstep/src/com/android/launcher3/taskbar/TaskbarNavButtonController.java
+++ b/quickstep/src/com/android/launcher3/taskbar/TaskbarNavButtonController.java
@@ -19,8 +19,10 @@
 
 import static com.android.internal.app.AssistUtils.INVOCATION_TYPE_HOME_BUTTON_LONG_PRESS;
 import static com.android.internal.app.AssistUtils.INVOCATION_TYPE_KEY;
+import static com.android.systemui.shared.system.QuickStepContract.SYSUI_STATE_SCREEN_PINNING;
 
 import android.os.Bundle;
+import android.os.Handler;
 
 import androidx.annotation.IntDef;
 
@@ -40,6 +42,13 @@
  */
 public class TaskbarNavButtonController {
 
+    /** Allow some time in between the long press for back and recents. */
+    static final int SCREEN_PIN_LONG_PRESS_THRESHOLD = 200;
+    static final int SCREEN_PIN_LONG_PRESS_RESET = SCREEN_PIN_LONG_PRESS_THRESHOLD + 100;
+
+    private long mLastScreenPinLongPress;
+    private boolean mScreenPinned;
+
     @Retention(RetentionPolicy.SOURCE)
     @IntDef(value = {
             BUTTON_BACK,
@@ -57,10 +66,20 @@
     static final int BUTTON_IME_SWITCH = BUTTON_RECENTS << 1;
     static final int BUTTON_A11Y = BUTTON_IME_SWITCH << 1;
 
-    private final TouchInteractionService mService;
+    private static final int SCREEN_UNPIN_COMBO = BUTTON_BACK | BUTTON_RECENTS;
+    private int mLongPressedButtons = 0;
 
-    public TaskbarNavButtonController(TouchInteractionService service) {
+    private final TouchInteractionService mService;
+    private final SystemUiProxy mSystemUiProxy;
+    private final Handler mHandler;
+
+    private final Runnable mResetLongPress = this::resetScreenUnpin;
+
+    public TaskbarNavButtonController(TouchInteractionService service,
+            SystemUiProxy systemUiProxy, Handler handler) {
         mService = service;
+        mSystemUiProxy = systemUiProxy;
+        mHandler = handler;
     }
 
     public void onButtonClick(@TaskbarButton int buttonType) {
@@ -72,13 +91,13 @@
                 navigateHome();
                 break;
             case BUTTON_RECENTS:
-                navigateToOverview();;
+                navigateToOverview();
                 break;
             case BUTTON_IME_SWITCH:
                 showIMESwitcher();
                 break;
             case BUTTON_A11Y:
-                notifyImeClick(false /* longClick */);
+                notifyA11yClick(false /* longClick */);
                 break;
         }
     }
@@ -89,46 +108,98 @@
                 startAssistant();
                 return true;
             case BUTTON_A11Y:
-                notifyImeClick(true /* longClick */);
+                notifyA11yClick(true /* longClick */);
                 return true;
             case BUTTON_BACK:
-            case BUTTON_IME_SWITCH:
             case BUTTON_RECENTS:
+                mLongPressedButtons |= buttonType;
+                return determineScreenUnpin();
+            case BUTTON_IME_SWITCH:
             default:
                 return false;
         }
     }
 
+    /**
+     * Checks if the user has long pressed back and recents buttons
+     * "together" (within {@link #SCREEN_PIN_LONG_PRESS_THRESHOLD})ms
+     * If so, then requests the system to turn off screen pinning.
+     *
+     * @return true if the long press is a valid user action in attempting to unpin an app
+     *         Will always return {@code false} when screen pinning is not active.
+     *         NOTE: Returning true does not mean that screen pinning has stopped
+     */
+    private boolean determineScreenUnpin() {
+        long timeNow = System.currentTimeMillis();
+        if (!mScreenPinned) {
+            return false;
+        }
+
+        if (mLastScreenPinLongPress == 0) {
+            // First button long press registered, just mark time and wait for second button press
+            mLastScreenPinLongPress = System.currentTimeMillis();
+            mHandler.postDelayed(mResetLongPress, SCREEN_PIN_LONG_PRESS_RESET);
+            return true;
+        }
+
+        if ((timeNow - mLastScreenPinLongPress) > SCREEN_PIN_LONG_PRESS_THRESHOLD) {
+            // Too long in-between presses, reset the clock
+            resetScreenUnpin();
+            return false;
+        }
+
+        if ((mLongPressedButtons & SCREEN_UNPIN_COMBO) == SCREEN_UNPIN_COMBO) {
+            // Hooray! They did it (finally...)
+            mSystemUiProxy.stopScreenPinning();
+            mHandler.removeCallbacks(mResetLongPress);
+            resetScreenUnpin();
+        }
+        return true;
+    }
+
+    private void resetScreenUnpin() {
+        mLongPressedButtons = 0;
+        mLastScreenPinLongPress = 0;
+    }
+
+    public void updateSysuiFlags(int sysuiFlags) {
+        mScreenPinned = (sysuiFlags & SYSUI_STATE_SCREEN_PINNING) != 0;
+    }
+
     private void navigateHome() {
         mService.getOverviewCommandHelper().addCommand(OverviewCommandHelper.TYPE_HOME);
     }
 
     private void navigateToOverview() {
+        if (mScreenPinned) {
+            return;
+        }
         TestLogging.recordEvent(TestProtocol.SEQUENCE_MAIN, "onOverviewToggle");
         mService.getOverviewCommandHelper().addCommand(OverviewCommandHelper.TYPE_TOGGLE);
     }
 
     private void executeBack() {
-        SystemUiProxy.INSTANCE.getNoCreate().onBackPressed();
+        mSystemUiProxy.onBackPressed();
     }
 
     private void showIMESwitcher() {
-        SystemUiProxy.INSTANCE.getNoCreate().onImeSwitcherPressed();
+        mSystemUiProxy.onImeSwitcherPressed();
     }
 
-    private void notifyImeClick(boolean longClick) {
-        SystemUiProxy systemUiProxy = SystemUiProxy.INSTANCE.getNoCreate();
+    private void notifyA11yClick(boolean longClick) {
         if (longClick) {
-            systemUiProxy.notifyAccessibilityButtonLongClicked();
+            mSystemUiProxy.notifyAccessibilityButtonLongClicked();
         } else {
-            systemUiProxy.notifyAccessibilityButtonClicked(mService.getDisplayId());
+            mSystemUiProxy.notifyAccessibilityButtonClicked(mService.getDisplayId());
         }
     }
 
     private void startAssistant() {
+        if (mScreenPinned) {
+            return;
+        }
         Bundle args = new Bundle();
         args.putInt(INVOCATION_TYPE_KEY, INVOCATION_TYPE_HOME_BUTTON_LONG_PRESS);
-        SystemUiProxy systemUiProxy = SystemUiProxy.INSTANCE.getNoCreate();
-        systemUiProxy.startAssistant(args);
+        mSystemUiProxy.startAssistant(args);
     }
 }
diff --git a/quickstep/src/com/android/launcher3/taskbar/TaskbarUIController.java b/quickstep/src/com/android/launcher3/taskbar/TaskbarUIController.java
index f713dca..f6bc785 100644
--- a/quickstep/src/com/android/launcher3/taskbar/TaskbarUIController.java
+++ b/quickstep/src/com/android/launcher3/taskbar/TaskbarUIController.java
@@ -18,6 +18,8 @@
 import android.graphics.Rect;
 import android.view.View;
 
+import androidx.annotation.CallSuper;
+
 import com.android.launcher3.model.data.ItemInfoWithIcon;
 import com.android.launcher3.model.data.WorkspaceItemInfo;
 
@@ -33,11 +35,15 @@
     // Initialized in init.
     protected TaskbarControllers mControllers;
 
+    @CallSuper
     protected void init(TaskbarControllers taskbarControllers) {
         mControllers = taskbarControllers;
     }
 
-    protected void onDestroy() { }
+    @CallSuper
+    protected void onDestroy() {
+        mControllers = null;
+    }
 
     protected boolean isTaskbarTouchable() {
         return true;
diff --git a/quickstep/src/com/android/launcher3/uioverrides/RecentsViewStateController.java b/quickstep/src/com/android/launcher3/uioverrides/RecentsViewStateController.java
index b21d677..19897a1 100644
--- a/quickstep/src/com/android/launcher3/uioverrides/RecentsViewStateController.java
+++ b/quickstep/src/com/android/launcher3/uioverrides/RecentsViewStateController.java
@@ -66,6 +66,12 @@
         // In Overview, we may be layering app surfaces behind Launcher, so we need to notify
         // DepthController to prevent optimizations which might occlude the layers behind
         mLauncher.getDepthController().setHasContentBehindLauncher(state.overviewUi);
+
+        if (isSplitSelectionState(state)) {
+            mRecentsView.applySplitPrimaryScrollOffset();
+        } else {
+            mRecentsView.resetSplitPrimaryScrollOffset();
+        }
     }
 
     @Override
@@ -90,9 +96,10 @@
         LauncherState currentState = mLauncher.getStateManager().getState();
         if (isSplitSelectionState(toState) && !isSplitSelectionState(currentState)) {
             builder.add(mRecentsView.createSplitSelectInitAnimation().buildAnim());
+        }
+        if (isSplitSelectionState(toState)) {
             mRecentsView.applySplitPrimaryScrollOffset();
-        } else if (!isSplitSelectionState(toState) && isSplitSelectionState(currentState)) {
-            builder.add(mRecentsView.cancelSplitSelect(true).buildAnim());
+        } else {
             mRecentsView.resetSplitPrimaryScrollOffset();
         }
 
diff --git a/quickstep/src/com/android/launcher3/uioverrides/states/SplitScreenSelectState.java b/quickstep/src/com/android/launcher3/uioverrides/states/SplitScreenSelectState.java
index 106375a..4f5f27a 100644
--- a/quickstep/src/com/android/launcher3/uioverrides/states/SplitScreenSelectState.java
+++ b/quickstep/src/com/android/launcher3/uioverrides/states/SplitScreenSelectState.java
@@ -31,11 +31,6 @@
     }
 
     @Override
-    public void onBackPressed(Launcher launcher) {
-        launcher.getStateManager().goToState(OVERVIEW);
-    }
-
-    @Override
     public int getVisibleElements(Launcher launcher) {
         return SPLIT_PLACHOLDER_VIEW;
     }
diff --git a/quickstep/src/com/android/quickstep/RecentsAnimationCallbacks.java b/quickstep/src/com/android/quickstep/RecentsAnimationCallbacks.java
index dd6392c..b502676 100644
--- a/quickstep/src/com/android/quickstep/RecentsAnimationCallbacks.java
+++ b/quickstep/src/com/android/quickstep/RecentsAnimationCallbacks.java
@@ -23,6 +23,7 @@
 import android.view.RemoteAnimationTarget;
 
 import androidx.annotation.BinderThread;
+import androidx.annotation.NonNull;
 import androidx.annotation.UiThread;
 
 import com.android.launcher3.Utilities;
@@ -77,7 +78,7 @@
 
     public void notifyAnimationCanceled() {
         mCancelled = true;
-        onAnimationCanceled(null);
+        onAnimationCanceled(new HashMap<>());
     }
 
     // Called only in Q platform
@@ -167,16 +168,17 @@
          * Callback from the system when the recents animation is canceled. {@param thumbnailData}
          * is passed back for rendering screenshot to replace live tile.
          */
-        default void onRecentsAnimationCanceled(HashMap<Integer, ThumbnailData> thumbnailDatas) {}
+        default void onRecentsAnimationCanceled(
+                @NonNull HashMap<Integer, ThumbnailData> thumbnailDatas) {}
 
         /**
          * Callback made whenever the recents animation is finished.
          */
-        default void onRecentsAnimationFinished(RecentsAnimationController controller) {}
+        default void onRecentsAnimationFinished(@NonNull RecentsAnimationController controller) {}
 
         /**
          * Callback made when a task started from the recents is ready for an app transition.
          */
-        default void onTasksAppeared(RemoteAnimationTargetCompat[] appearedTaskTarget) {}
+        default void onTasksAppeared(@NonNull RemoteAnimationTargetCompat[] appearedTaskTarget) {}
     }
 }
diff --git a/quickstep/src/com/android/quickstep/SystemUiProxy.java b/quickstep/src/com/android/quickstep/SystemUiProxy.java
index a9fef41..6c623bc 100644
--- a/quickstep/src/com/android/quickstep/SystemUiProxy.java
+++ b/quickstep/src/com/android/quickstep/SystemUiProxy.java
@@ -599,11 +599,11 @@
         }
     }
 
-    public void startShortcut(String packageName, String shortcutId, int stage, int position,
+    public void startShortcut(String packageName, String shortcutId, int position,
             Bundle options, UserHandle user) {
         if (mSplitScreen != null) {
             try {
-                mSplitScreen.startShortcut(packageName, shortcutId, stage, position, options,
+                mSplitScreen.startShortcut(packageName, shortcutId, position, options,
                         user);
             } catch (RemoteException e) {
                 Log.w(TAG, "Failed call startShortcut");
@@ -611,11 +611,11 @@
         }
     }
 
-    public void startIntent(PendingIntent intent, Intent fillInIntent, int stage, int position,
+    public void startIntent(PendingIntent intent, Intent fillInIntent, int position,
             Bundle options) {
         if (mSplitScreen != null) {
             try {
-                mSplitScreen.startIntent(intent, fillInIntent, stage, position, options);
+                mSplitScreen.startIntent(intent, fillInIntent, position, options);
             } catch (RemoteException e) {
                 Log.w(TAG, "Failed call startIntent");
             }
diff --git a/quickstep/src/com/android/quickstep/TaskViewUtils.java b/quickstep/src/com/android/quickstep/TaskViewUtils.java
index e77ec78..97fc6d7 100644
--- a/quickstep/src/com/android/quickstep/TaskViewUtils.java
+++ b/quickstep/src/com/android/quickstep/TaskViewUtils.java
@@ -316,7 +316,7 @@
                 mt[i] = localMt;
 
                 Matrix localMti = new Matrix();
-                localMti.invert(localMt);
+                localMt.invert(localMti);
                 mti[i] = localMti;
             }
 
diff --git a/quickstep/src/com/android/quickstep/util/BaseUnfoldMoveFromCenterAnimator.java b/quickstep/src/com/android/quickstep/util/BaseUnfoldMoveFromCenterAnimator.java
new file mode 100644
index 0000000..861ff96
--- /dev/null
+++ b/quickstep/src/com/android/quickstep/util/BaseUnfoldMoveFromCenterAnimator.java
@@ -0,0 +1,93 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.android.quickstep.util;
+
+import android.annotation.CallSuper;
+import android.view.View;
+import android.view.ViewGroup;
+import android.view.WindowManager;
+
+import com.android.systemui.shared.animation.UnfoldMoveFromCenterAnimator;
+import com.android.systemui.unfold.UnfoldTransitionProgressProvider.TransitionProgressListener;
+
+import java.util.HashMap;
+import java.util.Map;
+
+/**
+ * Animation that moves launcher icons and widgets from center to the sides (final position)
+ */
+public abstract class BaseUnfoldMoveFromCenterAnimator implements TransitionProgressListener {
+
+    private final UnfoldMoveFromCenterAnimator mMoveFromCenterAnimation;
+
+    private final Map<ViewGroup, Boolean> mOriginalClipToPadding = new HashMap<>();
+    private final Map<ViewGroup, Boolean> mOriginalClipChildren = new HashMap<>();
+
+    public BaseUnfoldMoveFromCenterAnimator(WindowManager windowManager) {
+        mMoveFromCenterAnimation = new UnfoldMoveFromCenterAnimator(windowManager,
+                new LauncherViewsMoveFromCenterTranslationApplier());
+    }
+
+    @CallSuper
+    @Override
+    public void onTransitionStarted() {
+        mMoveFromCenterAnimation.updateDisplayProperties();
+        onPrepareViewsForAnimation();
+        onTransitionProgress(0f);
+    }
+
+    @CallSuper
+    @Override
+    public void onTransitionProgress(float progress) {
+        mMoveFromCenterAnimation.onTransitionProgress(progress);
+    }
+
+    @CallSuper
+    @Override
+    public void onTransitionFinished() {
+        mMoveFromCenterAnimation.onTransitionFinished();
+        mMoveFromCenterAnimation.clearRegisteredViews();
+
+        mOriginalClipChildren.clear();
+        mOriginalClipToPadding.clear();
+    }
+
+    protected void onPrepareViewsForAnimation() {
+
+    }
+
+    protected void registerViewForAnimation(View view) {
+        mMoveFromCenterAnimation.registerViewForAnimation(view);
+    }
+
+    protected void disableClipping(ViewGroup view) {
+        mOriginalClipToPadding.put(view, view.getClipToPadding());
+        mOriginalClipChildren.put(view, view.getClipChildren());
+        view.setClipToPadding(false);
+        view.setClipChildren(false);
+    }
+
+    protected void restoreClipping(ViewGroup view) {
+        final Boolean originalClipToPadding = mOriginalClipToPadding.get(view);
+        if (originalClipToPadding != null) {
+            view.setClipToPadding(originalClipToPadding);
+        }
+        final Boolean originalClipChildren = mOriginalClipChildren.get(view);
+        if (originalClipChildren != null) {
+            view.setClipChildren(originalClipChildren);
+        }
+    }
+}
diff --git a/quickstep/src/com/android/quickstep/util/LauncherUnfoldAnimationController.java b/quickstep/src/com/android/quickstep/util/LauncherUnfoldAnimationController.java
index b39412b..6b6bd6a 100644
--- a/quickstep/src/com/android/quickstep/util/LauncherUnfoldAnimationController.java
+++ b/quickstep/src/com/android/quickstep/util/LauncherUnfoldAnimationController.java
@@ -18,14 +18,17 @@
 import static com.android.launcher3.Utilities.comp;
 
 import android.annotation.Nullable;
-import android.view.ViewTreeObserver;
 import android.view.WindowManager;
+import android.view.WindowManagerGlobal;
+
+import androidx.core.view.OneShotPreDrawListener;
 
 import com.android.launcher3.Hotseat;
 import com.android.launcher3.Launcher;
 import com.android.launcher3.util.HorizontalInsettableView;
 import com.android.systemui.unfold.UnfoldTransitionProgressProvider;
 import com.android.systemui.unfold.UnfoldTransitionProgressProvider.TransitionProgressListener;
+import com.android.systemui.unfold.util.NaturalRotationUnfoldProgressProvider;
 import com.android.systemui.unfold.util.ScopedUnfoldTransitionProgressProvider;
 
 /**
@@ -43,6 +46,7 @@
     private HorizontalInsettableView mQsbInsettable;
 
     private final ScopedUnfoldTransitionProgressProvider mProgressProvider;
+    private final NaturalRotationUnfoldProgressProvider mNaturalOrientationProgressProvider;
 
     public LauncherUnfoldAnimationController(
             Launcher launcher,
@@ -51,10 +55,19 @@
         mLauncher = launcher;
         mProgressProvider = new ScopedUnfoldTransitionProgressProvider(
                 unfoldTransitionProgressProvider);
+        mNaturalOrientationProgressProvider = new NaturalRotationUnfoldProgressProvider(launcher,
+                WindowManagerGlobal.getWindowManagerService(), mProgressProvider);
+        mNaturalOrientationProgressProvider.init();
 
+        // Animated in all orientations
         mProgressProvider.addCallback(new UnfoldMoveFromCenterWorkspaceAnimator(launcher,
                 windowManager));
-        mProgressProvider.addCallback(new QsbAnimationListener());
+
+        // Animated only in natural orientation
+        mNaturalOrientationProgressProvider
+                .addCallback(new QsbAnimationListener());
+        mNaturalOrientationProgressProvider
+                .addCallback(new UnfoldMoveFromCenterHotseatAnimator(launcher, windowManager));
     }
 
     /**
@@ -66,17 +79,8 @@
             mQsbInsettable = (HorizontalInsettableView) hotseat.getQsb();
         }
 
-        final ViewTreeObserver obs = mLauncher.getWorkspace().getViewTreeObserver();
-        obs.addOnPreDrawListener(new ViewTreeObserver.OnPreDrawListener() {
-            @Override
-            public boolean onPreDraw() {
-                if (obs.isAlive()) {
-                    mProgressProvider.setReadyToHandleTransition(true);
-                    obs.removeOnPreDrawListener(this);
-                }
-                return true;
-            }
-        });
+        OneShotPreDrawListener.add(mLauncher.getWorkspace(),
+                () -> mProgressProvider.setReadyToHandleTransition(true));
     }
 
     /**
@@ -92,6 +96,7 @@
      */
     public void onDestroy() {
         mProgressProvider.destroy();
+        mNaturalOrientationProgressProvider.destroy();
     }
 
     private class QsbAnimationListener implements TransitionProgressListener {
diff --git a/quickstep/src/com/android/quickstep/util/UnfoldMoveFromCenterHotseatAnimator.java b/quickstep/src/com/android/quickstep/util/UnfoldMoveFromCenterHotseatAnimator.java
new file mode 100644
index 0000000..dc97dd6
--- /dev/null
+++ b/quickstep/src/com/android/quickstep/util/UnfoldMoveFromCenterHotseatAnimator.java
@@ -0,0 +1,55 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.android.quickstep.util;
+
+import android.view.View;
+import android.view.ViewGroup;
+import android.view.WindowManager;
+
+import com.android.launcher3.Hotseat;
+import com.android.launcher3.Launcher;
+
+/**
+ * Animation that moves hotseat icons from center to the sides (final position)
+ */
+public class UnfoldMoveFromCenterHotseatAnimator extends BaseUnfoldMoveFromCenterAnimator {
+
+    private final Launcher mLauncher;
+
+    public UnfoldMoveFromCenterHotseatAnimator(Launcher launcher, WindowManager windowManager) {
+        super(windowManager);
+        mLauncher = launcher;
+    }
+
+    @Override
+    protected void onPrepareViewsForAnimation() {
+        Hotseat hotseat = mLauncher.getHotseat();
+
+        ViewGroup hotseatIcons = hotseat.getShortcutsAndWidgets();
+        disableClipping(hotseat);
+
+        for (int i = 0; i < hotseatIcons.getChildCount(); i++) {
+            View child = hotseatIcons.getChildAt(i);
+            registerViewForAnimation(child);
+        }
+    }
+
+    @Override
+    public void onTransitionFinished() {
+        restoreClipping(mLauncher.getHotseat());
+        super.onTransitionFinished();
+    }
+}
diff --git a/quickstep/src/com/android/quickstep/util/UnfoldMoveFromCenterWorkspaceAnimator.java b/quickstep/src/com/android/quickstep/util/UnfoldMoveFromCenterWorkspaceAnimator.java
index 95403b2..3d72398 100644
--- a/quickstep/src/com/android/quickstep/util/UnfoldMoveFromCenterWorkspaceAnimator.java
+++ b/quickstep/src/com/android/quickstep/util/UnfoldMoveFromCenterWorkspaceAnimator.java
@@ -16,44 +16,28 @@
 package com.android.quickstep.util;
 
 import android.view.View;
-import android.view.ViewGroup;
 import android.view.WindowManager;
 
 import com.android.launcher3.CellLayout;
-import com.android.launcher3.Hotseat;
 import com.android.launcher3.Launcher;
 import com.android.launcher3.ShortcutAndWidgetContainer;
 import com.android.launcher3.Workspace;
-import com.android.systemui.shared.animation.UnfoldMoveFromCenterAnimator;
-import com.android.systemui.unfold.UnfoldTransitionProgressProvider;
-
-import java.util.HashMap;
-import java.util.Map;
 
 /**
  * Animation that moves launcher icons and widgets from center to the sides (final position)
  */
-public class UnfoldMoveFromCenterWorkspaceAnimator
-        implements UnfoldTransitionProgressProvider.TransitionProgressListener {
+public class UnfoldMoveFromCenterWorkspaceAnimator extends BaseUnfoldMoveFromCenterAnimator {
 
     private final Launcher mLauncher;
-    private final UnfoldMoveFromCenterAnimator mMoveFromCenterAnimation;
-
-    private final Map<ViewGroup, Boolean> mOriginalClipToPadding = new HashMap<>();
-    private final Map<ViewGroup, Boolean> mOriginalClipChildren = new HashMap<>();
 
     public UnfoldMoveFromCenterWorkspaceAnimator(Launcher launcher, WindowManager windowManager) {
+        super(windowManager);
         mLauncher = launcher;
-        mMoveFromCenterAnimation = new UnfoldMoveFromCenterAnimator(windowManager,
-                new LauncherViewsMoveFromCenterTranslationApplier());
     }
 
     @Override
-    public void onTransitionStarted() {
-        mMoveFromCenterAnimation.updateDisplayProperties();
-
+    protected void onPrepareViewsForAnimation() {
         Workspace workspace = mLauncher.getWorkspace();
-        Hotseat hotseat = mLauncher.getHotseat();
 
         // App icons and widgets
         workspace
@@ -65,57 +49,17 @@
 
                     for (int i = 0; i < itemsContainer.getChildCount(); i++) {
                         View child = itemsContainer.getChildAt(i);
-                        mMoveFromCenterAnimation.registerViewForAnimation(child);
+                        registerViewForAnimation(child);
                     }
                 });
 
         disableClipping(workspace);
-
-        // Hotseat icons
-        ViewGroup hotseatIcons = hotseat.getShortcutsAndWidgets();
-        disableClipping(hotseat);
-
-        for (int i = 0; i < hotseatIcons.getChildCount(); i++) {
-            View child = hotseatIcons.getChildAt(i);
-            mMoveFromCenterAnimation.registerViewForAnimation(child);
-        }
-
-        onTransitionProgress(0f);
-    }
-
-    @Override
-    public void onTransitionProgress(float progress) {
-        mMoveFromCenterAnimation.onTransitionProgress(progress);
     }
 
     @Override
     public void onTransitionFinished() {
-        mMoveFromCenterAnimation.onTransitionFinished();
-        mMoveFromCenterAnimation.clearRegisteredViews();
-
         restoreClipping(mLauncher.getWorkspace());
         mLauncher.getWorkspace().forEachVisiblePage(page -> restoreClipping((CellLayout) page));
-        restoreClipping(mLauncher.getHotseat());
-
-        mOriginalClipChildren.clear();
-        mOriginalClipToPadding.clear();
-    }
-
-    private void disableClipping(ViewGroup view) {
-        mOriginalClipToPadding.put(view, view.getClipToPadding());
-        mOriginalClipChildren.put(view, view.getClipChildren());
-        view.setClipToPadding(false);
-        view.setClipChildren(false);
-    }
-
-    private void restoreClipping(ViewGroup view) {
-        final Boolean originalClipToPadding = mOriginalClipToPadding.get(view);
-        if (originalClipToPadding != null) {
-            view.setClipToPadding(originalClipToPadding);
-        }
-        final Boolean originalClipChildren = mOriginalClipChildren.get(view);
-        if (originalClipChildren != null) {
-            view.setClipChildren(originalClipChildren);
-        }
+        super.onTransitionFinished();
     }
 }
diff --git a/quickstep/src/com/android/quickstep/views/FloatingTaskView.java b/quickstep/src/com/android/quickstep/views/FloatingTaskView.java
index 325ec04..a343e0a 100644
--- a/quickstep/src/com/android/quickstep/views/FloatingTaskView.java
+++ b/quickstep/src/com/android/quickstep/views/FloatingTaskView.java
@@ -129,9 +129,7 @@
     public void update(RectF position, float progress, float windowRadius) {
         MarginLayoutParams lp = (MarginLayoutParams) getLayoutParams();
 
-        float dX = mIsRtl
-                ? position.left - (lp.getMarginStart() - lp.width)
-                : position.left - lp.getMarginStart();
+        float dX = position.left - lp.getMarginStart();
         float dY = position.top - lp.topMargin;
 
         setTranslationX(dX);
@@ -157,16 +155,10 @@
         lp.ignoreInsets = true;
         // Position the floating view exactly on top of the original
         lp.topMargin = Math.round(pos.top);
-        if (mIsRtl) {
-            lp.setMarginStart(Math.round(mLauncher.getDeviceProfile().widthPx - pos.right));
-        } else {
-            lp.setMarginStart(Math.round(pos.left));
-        }
+        lp.setMarginStart(Math.round(pos.left));
         // Set the properties here already to make sure they are available when running the first
         // animation frame.
-        int left = mIsRtl
-                ? mLauncher.getDeviceProfile().widthPx - lp.getMarginStart() - lp.width
-                : lp.leftMargin;
+        int left = lp.leftMargin;
         layout(left, lp.topMargin, left + lp.width, lp.topMargin + lp.height);
     }
 
diff --git a/quickstep/src/com/android/quickstep/views/GroupedTaskView.java b/quickstep/src/com/android/quickstep/views/GroupedTaskView.java
index 00f541d..9311261 100644
--- a/quickstep/src/com/android/quickstep/views/GroupedTaskView.java
+++ b/quickstep/src/com/android/quickstep/views/GroupedTaskView.java
@@ -157,10 +157,20 @@
     @Nullable
     @Override
     public RunnableList launchTaskAnimated() {
-        getRecentsView().getSplitPlaceholder().launchTasks(this /*groupedTaskView*/,
-                null /*callback*/,
+        if (mTask == null || mSecondaryTask == null) {
+            return null;
+        }
+
+        RunnableList endCallback = new RunnableList();
+        RecentsView recentsView = getRecentsView();
+        // Callbacks run from remote animation when recents animation not currently running
+        recentsView.getSplitPlaceholder().launchTasks(this /*groupedTaskView*/,
+                success -> endCallback.executeAllAndDestroy(),
                 false /* freezeTaskList */);
-        return null;
+
+        // Callbacks get run from recentsView for case when recents animation already running
+        recentsView.addSideTaskLaunchCallback(endCallback);
+        return endCallback;
     }
 
     @Override
@@ -248,4 +258,10 @@
         super.updateSnapshotRadius();
         mSnapshotView2.setFullscreenParams(mCurrentFullscreenParams);
     }
+
+    @Override
+    protected void setIconAndDimTransitionProgress(float progress, boolean invert) {
+        super.setIconAndDimTransitionProgress(progress, invert);
+        mIconView2.setAlpha(mIconView.getAlpha());
+    }
 }
diff --git a/quickstep/src/com/android/quickstep/views/OverviewActionsView.java b/quickstep/src/com/android/quickstep/views/OverviewActionsView.java
index 67f7056..cbbe3eb 100644
--- a/quickstep/src/com/android/quickstep/views/OverviewActionsView.java
+++ b/quickstep/src/com/android/quickstep/views/OverviewActionsView.java
@@ -24,6 +24,7 @@
 import android.util.AttributeSet;
 import android.view.View;
 import android.view.View.OnClickListener;
+import android.widget.Button;
 import android.widget.FrameLayout;
 
 import androidx.annotation.IntDef;
@@ -83,7 +84,7 @@
     private static final int INDEX_HIDDEN_FLAGS_ALPHA = 3;
 
     private final MultiValueAlpha mMultiValueAlpha;
-    private View mSplitButton;
+    private Button mSplitButton;
 
     @ActionsHiddenFlags
     private int mHiddenFlags;
@@ -247,6 +248,10 @@
         mDp = dp;
         updateVerticalMargin(SysUINavigationMode.getMode(getContext()));
         requestLayout();
+
+        mSplitButton.setCompoundDrawablesWithIntrinsicBounds(
+                (dp.isLandscape ? R.drawable.ic_split_horizontal : R.drawable.ic_split_vertical),
+                0, 0, 0);
     }
 
     public void setSplitButtonVisible(boolean visible) {
diff --git a/quickstep/src/com/android/quickstep/views/RecentsView.java b/quickstep/src/com/android/quickstep/views/RecentsView.java
index 28c7b10..8c98c38 100644
--- a/quickstep/src/com/android/quickstep/views/RecentsView.java
+++ b/quickstep/src/com/android/quickstep/views/RecentsView.java
@@ -107,6 +107,7 @@
 import android.widget.OverScroller;
 import android.widget.Toast;
 
+import androidx.annotation.NonNull;
 import androidx.annotation.Nullable;
 import androidx.annotation.UiThread;
 import androidx.core.graphics.ColorUtils;
@@ -181,6 +182,7 @@
 import java.util.ArrayList;
 import java.util.HashMap;
 import java.util.List;
+import java.util.Objects;
 import java.util.function.Consumer;
 
 /**
@@ -822,7 +824,7 @@
     @Override
     public void onTaskIconChanged(String pkg, UserHandle user) {
         for (int i = 0; i < getTaskViewCount(); i++) {
-            TaskView tv = getTaskViewAt(i);
+            TaskView tv = requireTaskViewAt(i);
             Task task = tv.getTask();
             if (task != null && task.key != null && pkg.equals(task.key.getPackageName())
                     && task.key.userId == user.getIdentifier()) {
@@ -1039,6 +1041,17 @@
         }
     }
 
+    public boolean isTaskViewFullyVisible(TaskView tv) {
+        if (showAsGrid()) {
+            int screenStart = mOrientationHandler.getPrimaryScroll(this);
+            int screenEnd = screenStart + mOrientationHandler.getMeasuredSize(this);
+            return isTaskViewFullyWithinBounds(tv, screenStart, screenEnd);
+        } else {
+            // For now, just check if it's the active task
+            return indexOfChild(tv) == getNextPage();
+        }
+    }
+
     @Nullable
     private TaskView getLastGridTaskView() {
         return getLastGridTaskView(getTopRowIdArray(), getBottomRowIdArray());
@@ -1085,6 +1098,15 @@
                 && taskEnd <= end);
     }
 
+    private boolean isTaskViewFullyWithinBounds(TaskView tv, int start, int end) {
+        int taskStart = mOrientationHandler.getChildStart(tv) + (int) tv.getOffsetAdjustment(
+                showAsFullscreen(), showAsGrid());
+        int taskSize = (int) (mOrientationHandler.getMeasuredSize(tv) * tv.getSizeAdjustment(
+                showAsFullscreen()));
+        int taskEnd = taskStart + taskSize;
+        return taskStart >= start && taskEnd <= end;
+    }
+
     /**
      * Returns true if the task is in expected scroll position.
      *
@@ -1104,7 +1126,7 @@
         }
 
         for (int i = 0; i < getTaskViewCount(); i++) {
-            TaskView taskView = getTaskViewAt(i);
+            TaskView taskView = requireTaskViewAt(i);
             int[] taskIds = taskView.getTaskIds();
             if (taskIds[0] == taskId || taskIds[1] == taskId) {
                 return taskView;
@@ -1121,9 +1143,6 @@
             // Reset the running task when leaving overview since it can still have a reference to
             // its thumbnail
             mTmpRunningTasks = null;
-            if (mSplitSelectStateController.isSplitSelectActive()) {
-                cancelSplitSelect(false);
-            }
             // Remove grouped tasks and recycle once we exit overview
             int taskCount = getTaskViewCount();
             for (int i = 0; i < taskCount; i++) {
@@ -1181,7 +1200,7 @@
         if (showAsGrid()) {
             int taskCount = getTaskViewCount();
             for (int i = 0; i < taskCount; i++) {
-                TaskView taskView = getTaskViewAt(i);
+                TaskView taskView = requireTaskViewAt(i);
                 if (isTaskViewVisible(taskView) && taskView.offerTouchToChildren(ev)) {
                     // Keep consuming events to pass to delegate
                     return true;
@@ -1418,7 +1437,7 @@
             if (runningTaskId != -1) {
                 targetPage = indexOfChild(newRunningTaskView);
             } else if (getTaskViewCount() > 0) {
-                targetPage = indexOfChild(getTaskViewAt(0));
+                targetPage = indexOfChild(requireTaskViewAt(0));
             }
         } else if (currentTaskId != -1) {
             currentTaskView = getTaskViewByTaskId(currentTaskId);
@@ -1452,7 +1471,7 @@
 
     private void removeTasksViewsAndClearAllButton() {
         for (int i = getTaskViewCount() - 1; i >= 0; i--) {
-            removeView(getTaskViewAt(i));
+            removeView(requireTaskViewAt(i));
         }
         if (indexOfChild(mClearAllButton) != -1) {
             removeView(mClearAllButton);
@@ -1498,7 +1517,7 @@
 
     public void resetTaskVisuals() {
         for (int i = getTaskViewCount() - 1; i >= 0; i--) {
-            TaskView taskView = getTaskViewAt(i);
+            TaskView taskView = requireTaskViewAt(i);
             if (mIgnoreResetTaskId != taskView.getTaskIds()[0]) {
                 taskView.resetViewTransforms();
                 taskView.setIconScaleAndDim(mTaskIconScaledDown ? 0 : 1);
@@ -1539,7 +1558,7 @@
         mFullscreenProgress = fullscreenProgress;
         int taskCount = getTaskViewCount();
         for (int i = 0; i < taskCount; i++) {
-            getTaskViewAt(i).setFullscreenProgress(mFullscreenProgress);
+            requireTaskViewAt(i).setFullscreenProgress(mFullscreenProgress);
         }
         mClearAllButton.setFullscreenProgress(fullscreenProgress);
 
@@ -1666,7 +1685,7 @@
 
         float accumulatedTranslationX = 0;
         for (int i = 0; i < taskCount; i++) {
-            TaskView taskView = getTaskViewAt(i);
+            TaskView taskView = requireTaskViewAt(i);
             taskView.updateTaskSize();
             taskView.getPrimaryNonGridTranslationProperty().set(taskView, accumulatedTranslationX);
             taskView.getSecondaryNonGridTranslationProperty().set(taskView, 0f);
@@ -1812,7 +1831,7 @@
 
         // Update the task data for the in/visible children
         for (int i = 0; i < getTaskViewCount(); i++) {
-            TaskView taskView = getTaskViewAt(i);
+            TaskView taskView = requireTaskViewAt(i);
             Task task = taskView.getTask();
             int index = indexOfChild(taskView);
             boolean visible;
@@ -1955,7 +1974,7 @@
         }
 
         for (int i = 0; i < getTaskViewCount(); i++) {
-            TaskView taskView = getTaskViewAt(i);
+            TaskView taskView = requireTaskViewAt(i);
             if (taskView.getTaskViewId() == taskViewId) {
                 return taskView;
             }
@@ -2053,7 +2072,7 @@
         int runningIndex = getCurrentPage();
         AnimatorSet as = new AnimatorSet();
         for (int i = 0; i < getTaskViewCount(); i++) {
-            View taskView = getTaskViewAt(i);
+            View taskView = requireTaskViewAt(i);
             if (runningIndex == i && taskView.getAlpha() != 0) {
                 continue;
             }
@@ -2064,7 +2083,7 @@
 
     private void updateChildTaskOrientations() {
         for (int i = 0; i < getTaskViewCount(); i++) {
-            getTaskViewAt(i).setOrientationState(mOrientationState);
+            requireTaskViewAt(i).setOrientationState(mOrientationState);
         }
         TaskMenuView tv = (TaskMenuView) getTopOpenViewWithType(mActivity, TYPE_TASK_MENU);
         if (tv != null) {
@@ -2269,7 +2288,7 @@
             mTaskIconScaledDown = isScaledDown;
             int taskCount = getTaskViewCount();
             for (int i = 0; i < taskCount; i++) {
-                getTaskViewAt(i).setIconScaleAndDim(mTaskIconScaledDown ? 0 : 1);
+                requireTaskViewAt(i).setIconScaleAndDim(mTaskIconScaledDown ? 0 : 1);
             }
         }
     }
@@ -2285,7 +2304,7 @@
         mTaskIconScaledDown = false;
         int taskCount = getTaskViewCount();
         for (int i = 0; i < taskCount; i++) {
-            TaskView taskView = getTaskViewAt(i);
+            TaskView taskView = requireTaskViewAt(i);
             taskView.setIconScaleAnimStartProgress(0f);
             taskView.animateIconScaleAndDimIntoView();
         }
@@ -2357,7 +2376,7 @@
             mTopRowIdSet.clear();
         }
         for (int i = 0; i < taskCount; i++) {
-            TaskView taskView = getTaskViewAt(i);
+            TaskView taskView = requireTaskViewAt(i);
             int taskWidthAndSpacing = taskView.getLayoutParams().width + mPageSpacing;
             // Evenly distribute tasks between rows unless rearranging due to task dismissal, in
             // which case keep tasks in their respective rows. For the running task, don't join
@@ -2422,7 +2441,7 @@
                         if (j == focusedTaskIndex) {
                             continue;
                         }
-                        widthOffset += getTaskViewAt(j).getLayoutParams().width + mPageSpacing;
+                        widthOffset += requireTaskViewAt(j).getLayoutParams().width + mPageSpacing;
                     }
 
                     float currentTaskTranslationX = mIsRtl ? widthOffset : -widthOffset;
@@ -2441,7 +2460,7 @@
                         if (j == focusedTaskIndex) {
                             continue;
                         }
-                        widthOffset += getTaskViewAt(j).getLayoutParams().width + mPageSpacing;
+                        widthOffset += requireTaskViewAt(j).getLayoutParams().width + mPageSpacing;
                     }
 
                     float currentTaskTranslationX = mIsRtl ? widthOffset : -widthOffset;
@@ -2519,7 +2538,7 @@
         }
 
         for (int i = 0; i < taskCount; i++) {
-            TaskView taskView = getTaskViewAt(i);
+            TaskView taskView = requireTaskViewAt(i);
             taskView.setGridTranslationX(gridTranslations[i] - snappedTaskGridTranslationX
                     + snappedTaskNonGridScrollAdjustment);
         }
@@ -2560,7 +2579,7 @@
         mGridProgress = gridProgress;
 
         for (int i = 0; i < taskCount; i++) {
-            getTaskViewAt(i).setGridProgress(gridProgress);
+            requireTaskViewAt(i).setGridProgress(gridProgress);
         }
         mClearAllButton.setGridProgress(gridProgress);
     }
@@ -2723,7 +2742,7 @@
                         mTopRowIdSet.size() > 0 && mTopRowIdSet.size() >= (taskCount - 1) / 2f;
                 // Pick the next focused task from the preferred row.
                 for (int i = 0; i < taskCount; i++) {
-                    TaskView taskView = getTaskViewAt(i);
+                    TaskView taskView = requireTaskViewAt(i);
                     if (taskView == dismissedTaskView) {
                         continue;
                     }
@@ -2826,7 +2845,7 @@
                                 + (taskCount - 1) * halfAdditionalDismissTranslationOffset,
                         END_DISMISS_TRANSLATION_INTERPOLATION_OFFSET, 1);
                 for (int i = 0; i < taskCount; i++) {
-                    TaskView taskView = getTaskViewAt(i);
+                    TaskView taskView = requireTaskViewAt(i);
                     anim.setFloat(taskView, TaskView.GRID_END_TRANSLATION_X, longGridRowWidthDiff,
                             clampToProgress(LINEAR, dismissTranslationInterpolationEnd, 1));
                     dismissTranslationInterpolationEnd = Utilities.boundToRange(
@@ -3142,7 +3161,7 @@
                             // Rebalance tasks in the grid
                             int highestVisibleTaskIndex = getHighestVisibleTaskIndex();
                             if (highestVisibleTaskIndex < Integer.MAX_VALUE) {
-                                TaskView taskView = getTaskViewAt(highestVisibleTaskIndex);
+                                TaskView taskView = requireTaskViewAt(highestVisibleTaskIndex);
 
                                 boolean shouldRebalance;
                                 int screenStart = mOrientationHandler.getPrimaryScroll(
@@ -3240,7 +3259,7 @@
         IntArray topArray = new IntArray(mTopRowIdSet.size());
         int taskViewCount = getTaskViewCount();
         for (int i = 0; i < taskViewCount; i++) {
-            int taskViewId = getTaskViewAt(i).getTaskViewId();
+            int taskViewId = requireTaskViewAt(i).getTaskViewId();
             if (mTopRowIdSet.contains(taskViewId)) {
                 topArray.add(taskViewId);
             }
@@ -3259,7 +3278,7 @@
         IntArray bottomArray = new IntArray(bottomRowIdArraySize);
         int taskViewCount = getTaskViewCount();
         for (int i = 0; i < taskViewCount; i++) {
-            int taskViewId = getTaskViewAt(i).getTaskViewId();
+            int taskViewId = requireTaskViewAt(i).getTaskViewId();
             if (!mTopRowIdSet.contains(taskViewId) && taskViewId != mFocusedTaskViewId) {
                 bottomArray.add(taskViewId);
             }
@@ -3329,7 +3348,7 @@
 
         int count = getTaskViewCount();
         for (int i = 0; i < count; i++) {
-            addDismissedTaskAnimations(getTaskViewAt(i), duration, anim);
+            addDismissedTaskAnimations(requireTaskViewAt(i), duration, anim);
         }
 
         mPendingAnimation = anim;
@@ -3452,7 +3471,7 @@
         mContentAlpha = alpha;
         int runningTaskId = getTaskIdsForRunningTaskView()[0];
         for (int i = getTaskViewCount() - 1; i >= 0; i--) {
-            TaskView child = getTaskViewAt(i);
+            TaskView child = requireTaskViewAt(i);
             int[] childTaskIds = child.getTaskIds();
             if (!mRunningTaskTileHidden ||
                     (childTaskIds[0] != runningTaskId && childTaskIds[1] != runningTaskId)) {
@@ -3553,6 +3572,14 @@
         return child instanceof TaskView ? (TaskView) child : null;
     }
 
+    /**
+     * A version of {@link #getTaskViewAt} when the caller is sure about the input index.
+     */
+    @NonNull
+    private TaskView requireTaskViewAt(int index) {
+        return Objects.requireNonNull(getTaskViewAt(index));
+    }
+
     public void setOnEmptyMessageUpdatedListener(OnEmptyMessageUpdatedListener listener) {
         mOnEmptyMessageUpdatedListener = listener;
     }
@@ -3769,7 +3796,7 @@
     protected void setTaskViewsResistanceTranslation(float translation) {
         mTaskViewsSecondaryTranslation = translation;
         for (int i = 0; i < getTaskViewCount(); i++) {
-            TaskView task = getTaskViewAt(i);
+            TaskView task = requireTaskViewAt(i);
             task.getTaskResistanceTranslationProperty().set(task, translation / getScaleY());
         }
         runActionOnRemoteHandles(
@@ -3779,14 +3806,14 @@
 
     private void updateTaskViewsSnapshotRadius() {
         for (int i = 0; i < getTaskViewCount(); i++) {
-            getTaskViewAt(i).updateSnapshotRadius();
+            requireTaskViewAt(i).updateSnapshotRadius();
         }
     }
 
     protected void setTaskViewsPrimarySplitTranslation(float translation) {
         mTaskViewsPrimarySplitTranslation = translation;
         for (int i = 0; i < getTaskViewCount(); i++) {
-            TaskView task = getTaskViewAt(i);
+            TaskView task = requireTaskViewAt(i);
             task.getPrimarySplitTranslationProperty().set(task, translation);
         }
     }
@@ -3794,7 +3821,7 @@
     protected void setTaskViewsSecondarySplitTranslation(float translation) {
         mTaskViewsSecondarySplitTranslation = translation;
         for (int i = 0; i < getTaskViewCount(); i++) {
-            TaskView taskView = getTaskViewAt(i);
+            TaskView taskView = requireTaskViewAt(i);
             if (taskView == mSplitHiddenTaskView) {
                 continue;
             }
@@ -3808,7 +3835,7 @@
     public void applySplitPrimaryScrollOffset() {
         if (isSplitPlaceholderFirstInGrid()) {
             for (int i = 0; i < getTaskViewCount(); i++) {
-                getTaskViewAt(i).setSplitScrollOffsetPrimary(mSplitPlaceholderSize);
+                requireTaskViewAt(i).setSplitScrollOffsetPrimary(mSplitPlaceholderSize);
             }
         } else if (isSplitPlaceholderLastInGrid()) {
             mClearAllButton.setSplitSelectScrollOffsetPrimary(-mSplitPlaceholderSize);
@@ -3850,7 +3877,7 @@
      */
     public void resetSplitPrimaryScrollOffset() {
         for (int i = 0; i < getTaskViewCount(); i++) {
-            getTaskViewAt(i).setSplitScrollOffsetPrimary(0);
+            requireTaskViewAt(i).setSplitScrollOffsetPrimary(0);
         }
         mClearAllButton.setSplitSelectScrollOffsetPrimary(0);
     }
@@ -3930,109 +3957,6 @@
         pendingAnimation.buildAnim().start();
     }
 
-    public PendingAnimation cancelSplitSelect(boolean animate) {
-        SplitSelectStateController splitController = mSplitSelectStateController;
-        @StagePosition int stagePosition = splitController.getActiveSplitStagePosition();
-        Rect initialBounds = splitController.getInitialBounds();
-        splitController.resetState();
-        int duration = mActivity.getStateManager().getState().getTransitionDuration(getContext());
-        PendingAnimation pendingAnim = new PendingAnimation(duration);
-        mSplitToast.cancel();
-        mSplitUnsupportedToast.cancel();
-        if (!animate) {
-            resetFromSplitSelectionState();
-            return pendingAnim;
-        }
-
-        addViewInLayout(mSplitHiddenTaskView, mSplitHiddenTaskViewIndex,
-                mSplitHiddenTaskView.getLayoutParams());
-        mSplitHiddenTaskView.setAlpha(0);
-        int[] oldScroll = new int[getChildCount()];
-        getPageScrolls(oldScroll, false,
-                view -> view.getVisibility() != GONE && view != mSplitHiddenTaskView);
-
-        int[] newScroll = new int[getChildCount()];
-        getPageScrolls(newScroll, false, SIMPLE_SCROLL_LOGIC);
-
-        boolean needsCurveUpdates = false;
-        for (int i = mSplitHiddenTaskViewIndex; i >= 0; i--) {
-            View child = getChildAt(i);
-            if (child == mSplitHiddenTaskView) {
-                TaskView taskView = (TaskView) child;
-
-                int dir = mOrientationHandler.getSplitTaskViewDismissDirection(stagePosition,
-                        mActivity.getDeviceProfile());
-                FloatProperty<TaskView> dismissingTaskViewTranslate;
-                Rect hiddenBounds = new Rect(taskView.getLeft(), taskView.getTop(),
-                        taskView.getRight(), taskView.getBottom());
-                int distanceDelta = 0;
-                if (dir == PagedOrientationHandler.SPLIT_TRANSLATE_SECONDARY_NEGATIVE) {
-                    dismissingTaskViewTranslate = taskView
-                            .getSecondaryDissmissTranslationProperty();
-                    distanceDelta = initialBounds.top - hiddenBounds.top;
-                    taskView.layout(initialBounds.left, hiddenBounds.top, initialBounds.right,
-                            hiddenBounds.bottom);
-                } else {
-                    dismissingTaskViewTranslate = taskView
-                            .getPrimaryDismissTranslationProperty();
-                    distanceDelta = initialBounds.left - hiddenBounds.left;
-                    taskView.layout(hiddenBounds.left, initialBounds.top, hiddenBounds.right,
-                            initialBounds.bottom);
-                    if (dir == PagedOrientationHandler.SPLIT_TRANSLATE_PRIMARY_POSITIVE) {
-                        distanceDelta *= -1;
-                    }
-                }
-                pendingAnim.add(ObjectAnimator.ofFloat(mSplitHiddenTaskView,
-                        dismissingTaskViewTranslate,
-                        distanceDelta));
-                pendingAnim.add(ObjectAnimator.ofFloat(mSplitHiddenTaskView, ALPHA, 1));
-            } else {
-                // If insertion is on last index (furthest from clear all), we directly add the view
-                // else we translate all views to the right of insertion index further right,
-                // ignore views to left
-                if (showAsGrid()) {
-                    // TODO(b/186800707) handle more elegantly for grid
-                    continue;
-                }
-                int scrollDiff = newScroll[i] - oldScroll[i];
-                if (scrollDiff != 0) {
-                    FloatProperty translationProperty = child instanceof TaskView
-                            ? ((TaskView) child).getPrimaryDismissTranslationProperty()
-                            : mOrientationHandler.getPrimaryViewTranslate();
-
-                    ResourceProvider rp = DynamicResource.provider(mActivity);
-                    SpringProperty sp = new SpringProperty(SpringProperty.FLAG_CAN_SPRING_ON_END)
-                            .setDampingRatio(
-                                    rp.getFloat(R.dimen.dismiss_task_trans_x_damping_ratio))
-                            .setStiffness(rp.getFloat(R.dimen.dismiss_task_trans_x_stiffness));
-                    pendingAnim.add(ObjectAnimator.ofFloat(child, translationProperty, scrollDiff)
-                            .setDuration(duration), ACCEL, sp);
-                    needsCurveUpdates = true;
-                }
-            }
-        }
-
-        if (needsCurveUpdates) {
-            pendingAnim.addOnFrameCallback(this::updateCurveProperties);
-        }
-
-        pendingAnim.addListener(new AnimatorListenerAdapter() {
-            @Override
-            public void onAnimationEnd(Animator animation) {
-                // TODO(b/186800707) Figure out how to undo for grid view
-                //  Need to handle cases where dismissed task is
-                //  * Top Row
-                //  * Bottom Row
-                //  * Focused Task
-                updateGridProperties();
-                resetFromSplitSelectionState();
-                updateScrollSynchronously();
-            }
-        });
-
-        return pendingAnim;
-    }
-
     /** TODO(b/181707736) More gracefully handle exiting split selection state */
     private void resetFromSplitSelectionState() {
         if (!mActivity.getDeviceProfile().overviewShowAsGrid) {
@@ -4077,8 +4001,8 @@
         mTaskViewDeadZoneRect.setEmpty();
         int count = getTaskViewCount();
         if (count > 0) {
-            final View taskView = getTaskViewAt(0);
-            getTaskViewAt(count - 1).getHitRect(mTaskViewDeadZoneRect);
+            final View taskView = requireTaskViewAt(0);
+            requireTaskViewAt(count - 1).getHitRect(mTaskViewDeadZoneRect);
             mTaskViewDeadZoneRect.union(taskView.getLeft(), taskView.getTop(), taskView.getRight(),
                     taskView.getBottom());
         }
@@ -4559,7 +4483,7 @@
 
         final int taskCount = getTaskViewCount();
         for (int i = 0; i < taskCount; i++) {
-            TaskView taskView = getTaskViewAt(i);
+            TaskView taskView = requireTaskViewAt(i);
             float scrollDiff = taskView.getScrollAdjustment(showAsFullscreen, showAsGrid);
             int pageScroll = newPageScrolls[i] + (int) scrollDiff;
             if ((mIsRtl && pageScroll < clearAllScroll + clearAllWidth)
@@ -4727,7 +4651,7 @@
         int overlayEnabledPage = mOverlayEnabled ? getNextPage() : -1;
         int taskCount = getTaskViewCount();
         for (int i = 0; i < taskCount; i++) {
-            getTaskViewAt(i).setOverlayEnabled(i == overlayEnabledPage);
+            requireTaskViewAt(i).setOverlayEnabled(i == overlayEnabledPage);
         }
     }
 
@@ -4881,7 +4805,7 @@
         mColorTint = tintAmount;
 
         for (int i = 0; i < getTaskViewCount(); i++) {
-            getTaskViewAt(i).setColorTint(mColorTint, mTintingColor);
+            requireTaskViewAt(i).setColorTint(mColorTint, mTintingColor);
         }
 
         Drawable scrimBg = mActivity.getScrimView().getBackground();
@@ -4950,6 +4874,62 @@
     }
 
     @Override
+    public boolean scrollLeft() {
+        if (!showAsGrid()) {
+            return super.scrollLeft();
+        }
+
+        int targetPage = getNextPage();
+        if (targetPage >= 0) {
+            // Find the next page that is not fully visible.
+            TaskView taskView = getTaskViewAt(targetPage);
+            while ((taskView == null || isTaskViewFullyVisible(taskView)) && targetPage - 1 >= 0) {
+                taskView = getTaskViewAt(--targetPage);
+            }
+            // Target a scroll where targetPage is on left of screen but still fully visible.
+            int lastTaskEnd = (mIsRtl
+                    ? mLastComputedGridSize.left
+                    : mLastComputedGridSize.right)
+                    + (mIsRtl ? mPageSpacing : -mPageSpacing);
+            int normalTaskEnd = mIsRtl
+                    ? mLastComputedGridTaskSize.left
+                    : mLastComputedGridTaskSize.right;
+            int targetScroll = getScrollForPage(targetPage) + normalTaskEnd - lastTaskEnd;
+            // Find a page that is close to targetScroll while not over it.
+            while (targetPage - 1 >= 0
+                    && (mIsRtl
+                    ? getScrollForPage(targetPage - 1) < targetScroll
+                    : getScrollForPage(targetPage - 1) > targetScroll)) {
+                targetPage--;
+            }
+            snapToPage(targetPage);
+            return true;
+        }
+
+        return mAllowOverScroll;
+    }
+
+    @Override
+    public boolean scrollRight() {
+        if (!showAsGrid()) {
+            return super.scrollRight();
+        }
+
+        int targetPage = getNextPage();
+        if (targetPage < getChildCount()) {
+            // Find the next page that is not fully visible.
+            TaskView taskView = getTaskViewAt(targetPage);
+            while ((taskView != null && isTaskViewFullyVisible(taskView))
+                    && targetPage + 1 < getChildCount()) {
+                taskView = getTaskViewAt(++targetPage);
+            }
+            snapToPage(targetPage);
+            return true;
+        }
+        return mAllowOverScroll;
+    }
+
+    @Override
     protected void onScrollChanged(int l, int t, int oldl, int oldt) {
         super.onScrollChanged(l, t, oldl, oldt);
         dispatchScrollChanged();
diff --git a/quickstep/src/com/android/quickstep/views/TaskThumbnailView.java b/quickstep/src/com/android/quickstep/views/TaskThumbnailView.java
index d91669a..da92551 100644
--- a/quickstep/src/com/android/quickstep/views/TaskThumbnailView.java
+++ b/quickstep/src/com/android/quickstep/views/TaskThumbnailView.java
@@ -19,6 +19,7 @@
 import static android.view.WindowInsetsController.APPEARANCE_LIGHT_NAVIGATION_BARS;
 import static android.view.WindowInsetsController.APPEARANCE_LIGHT_STATUS_BARS;
 
+import static com.android.launcher3.Utilities.comp;
 import static com.android.launcher3.config.FeatureFlags.ENABLE_QUICKSTEP_LIVE_TILE;
 import static com.android.systemui.shared.system.WindowManagerWrapper.WINDOWING_MODE_FULLSCREEN;
 
@@ -290,8 +291,17 @@
             float cornerRadius) {
         if (ENABLE_QUICKSTEP_LIVE_TILE.get()) {
             if (mTask != null && getTaskView().isRunningTask() && !getTaskView().showScreenshot()) {
-                canvas.drawRoundRect(x, y, width, height, cornerRadius, cornerRadius, mClearPaint);
-                canvas.drawRoundRect(x, y, width, height, cornerRadius, cornerRadius,
+                // TODO(b/189265196): Temporary fix to align the surface with the cutout perfectly.
+                // Round up only when the live tile task is displayed in Overview.
+                float rounding = comp(mFullscreenParams.mFullscreenProgress);
+                float left = x + rounding / 2;
+                float top = y + rounding / 2;
+                float right = width - rounding;
+                float bottom = height - rounding;
+
+                canvas.drawRoundRect(left, top, right, bottom, cornerRadius, cornerRadius,
+                        mClearPaint);
+                canvas.drawRoundRect(left, top, right, bottom, cornerRadius, cornerRadius,
                         mDimmingPaintAfterClearing);
                 return;
             }
diff --git a/quickstep/src/com/android/quickstep/views/TaskView.java b/quickstep/src/com/android/quickstep/views/TaskView.java
index f7f5efc..8dee4e7 100644
--- a/quickstep/src/com/android/quickstep/views/TaskView.java
+++ b/quickstep/src/com/android/quickstep/views/TaskView.java
@@ -912,7 +912,7 @@
         return deviceProfile.overviewShowAsGrid && !isFocusedTask();
     }
 
-    private void setIconAndDimTransitionProgress(float progress, boolean invert) {
+    protected void setIconAndDimTransitionProgress(float progress, boolean invert) {
         if (invert) {
             progress = 1 - progress;
         }
@@ -1531,6 +1531,7 @@
         private final float mCornerRadius;
         private final float mWindowCornerRadius;
 
+        public float mFullscreenProgress;
         public RectF mCurrentDrawnInsets = new RectF();
         public float mCurrentDrawnCornerRadius;
         /** The current scale we apply to the thumbnail to adjust for new left/right insets. */
@@ -1548,6 +1549,8 @@
          */
         public void setProgress(float fullscreenProgress, float parentScale, float taskViewScale,
                 int previewWidth, DeviceProfile dp, PreviewPositionHelper pph) {
+            mFullscreenProgress = fullscreenProgress;
+
             RectF insets = pph.getInsetsToDrawInFullscreen(dp);
 
             float currentInsetsLeft = insets.left * fullscreenProgress;
diff --git a/quickstep/tests/src/com/android/launcher3/taskbar/TaskbarNavButtonControllerTest.java b/quickstep/tests/src/com/android/launcher3/taskbar/TaskbarNavButtonControllerTest.java
new file mode 100644
index 0000000..ba1a60d
--- /dev/null
+++ b/quickstep/tests/src/com/android/launcher3/taskbar/TaskbarNavButtonControllerTest.java
@@ -0,0 +1,159 @@
+package com.android.launcher3.taskbar;
+
+import static com.android.launcher3.taskbar.TaskbarNavButtonController.BUTTON_A11Y;
+import static com.android.launcher3.taskbar.TaskbarNavButtonController.BUTTON_BACK;
+import static com.android.launcher3.taskbar.TaskbarNavButtonController.BUTTON_HOME;
+import static com.android.launcher3.taskbar.TaskbarNavButtonController.BUTTON_IME_SWITCH;
+import static com.android.launcher3.taskbar.TaskbarNavButtonController.BUTTON_RECENTS;
+import static com.android.launcher3.taskbar.TaskbarNavButtonController.SCREEN_PIN_LONG_PRESS_THRESHOLD;
+import static com.android.quickstep.OverviewCommandHelper.TYPE_HOME;
+import static com.android.quickstep.OverviewCommandHelper.TYPE_TOGGLE;
+import static com.android.systemui.shared.system.QuickStepContract.SYSUI_STATE_SCREEN_PINNING;
+
+import static org.mockito.ArgumentMatchers.any;
+import static org.mockito.Mockito.times;
+import static org.mockito.Mockito.verify;
+import static org.mockito.Mockito.when;
+
+import android.os.Handler;
+
+import androidx.test.runner.AndroidJUnit4;
+
+import com.android.quickstep.OverviewCommandHelper;
+import com.android.quickstep.SystemUiProxy;
+import com.android.quickstep.TouchInteractionService;
+
+import org.junit.Before;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.mockito.Mock;
+import org.mockito.MockitoAnnotations;
+
+@RunWith(AndroidJUnit4.class)
+public class TaskbarNavButtonControllerTest {
+
+    private final static int DISPLAY_ID = 2;
+
+    @Mock
+    SystemUiProxy mockSystemUiProxy;
+    @Mock
+    TouchInteractionService mockService;
+    @Mock
+    OverviewCommandHelper mockCommandHelper;
+    @Mock
+    Handler mockHandler;
+
+    private TaskbarNavButtonController mNavButtonController;
+
+    @Before
+    public void setup() {
+        MockitoAnnotations.initMocks(this);
+        when(mockService.getDisplayId()).thenReturn(DISPLAY_ID);
+        when(mockService.getOverviewCommandHelper()).thenReturn(mockCommandHelper);
+        mNavButtonController = new TaskbarNavButtonController(mockService,
+                mockSystemUiProxy, mockHandler);
+    }
+
+    @Test
+    public void testPressBack() {
+        mNavButtonController.onButtonClick(BUTTON_BACK);
+        verify(mockSystemUiProxy, times(1)).onBackPressed();
+    }
+
+    @Test
+    public void testPressImeSwitcher() {
+        mNavButtonController.onButtonClick(BUTTON_IME_SWITCH);
+        verify(mockSystemUiProxy, times(1)).onImeSwitcherPressed();
+    }
+
+    @Test
+    public void testPressA11yShortClick() {
+        mNavButtonController.onButtonClick(BUTTON_A11Y);
+        verify(mockSystemUiProxy, times(1))
+                .notifyAccessibilityButtonClicked(DISPLAY_ID);
+    }
+
+    @Test
+    public void testPressA11yLongClick() {
+        mNavButtonController.onButtonLongClick(BUTTON_A11Y);
+        verify(mockSystemUiProxy, times(1)).notifyAccessibilityButtonLongClicked();
+    }
+
+    @Test
+    public void testLongPressHome() {
+        mNavButtonController.onButtonLongClick(BUTTON_HOME);
+        verify(mockSystemUiProxy, times(1)).startAssistant(any());
+    }
+
+    @Test
+    public void testPressHome() {
+        mNavButtonController.onButtonClick(BUTTON_HOME);
+        verify(mockCommandHelper, times(1)).addCommand(TYPE_HOME);
+    }
+
+    @Test
+    public void testPressRecents() {
+        mNavButtonController.onButtonClick(BUTTON_RECENTS);
+        verify(mockCommandHelper, times(1)).addCommand(TYPE_TOGGLE);
+    }
+
+    @Test
+    public void testPressRecentsWithScreenPinned() {
+        mNavButtonController.updateSysuiFlags(SYSUI_STATE_SCREEN_PINNING);
+        mNavButtonController.onButtonClick(BUTTON_RECENTS);
+        verify(mockCommandHelper, times(0)).addCommand(TYPE_TOGGLE);
+    }
+
+    @Test
+    public void testLongPressBackRecentsNotPinned() {
+        mNavButtonController.onButtonLongClick(BUTTON_RECENTS);
+        mNavButtonController.onButtonLongClick(BUTTON_BACK);
+        verify(mockSystemUiProxy, times(0)).stopScreenPinning();
+    }
+
+    @Test
+    public void testLongPressBackRecentsPinned() {
+        mNavButtonController.updateSysuiFlags(SYSUI_STATE_SCREEN_PINNING);
+        mNavButtonController.onButtonLongClick(BUTTON_RECENTS);
+        mNavButtonController.onButtonLongClick(BUTTON_BACK);
+        verify(mockSystemUiProxy, times(1)).stopScreenPinning();
+    }
+
+    @Test
+    public void testLongPressBackRecentsTooLongPinned() {
+        mNavButtonController.updateSysuiFlags(SYSUI_STATE_SCREEN_PINNING);
+        mNavButtonController.onButtonLongClick(BUTTON_RECENTS);
+        try {
+            Thread.sleep(SCREEN_PIN_LONG_PRESS_THRESHOLD + 5);
+        } catch (InterruptedException e) {
+            e.printStackTrace();
+        }
+        mNavButtonController.onButtonLongClick(BUTTON_BACK);
+        verify(mockSystemUiProxy, times(0)).stopScreenPinning();
+    }
+
+    @Test
+    public void testLongPressBackRecentsMultipleAttemptPinned() {
+        mNavButtonController.updateSysuiFlags(SYSUI_STATE_SCREEN_PINNING);
+        mNavButtonController.onButtonLongClick(BUTTON_RECENTS);
+        try {
+            Thread.sleep(SCREEN_PIN_LONG_PRESS_THRESHOLD + 5);
+        } catch (InterruptedException e) {
+            e.printStackTrace();
+        }
+        mNavButtonController.onButtonLongClick(BUTTON_BACK);
+        verify(mockSystemUiProxy, times(0)).stopScreenPinning();
+
+        // Try again w/in threshold
+        mNavButtonController.onButtonLongClick(BUTTON_RECENTS);
+        mNavButtonController.onButtonLongClick(BUTTON_BACK);
+        verify(mockSystemUiProxy, times(1)).stopScreenPinning();
+    }
+
+    @Test
+    public void testLongPressHomeScreenPinned() {
+        mNavButtonController.updateSysuiFlags(SYSUI_STATE_SCREEN_PINNING);
+        mNavButtonController.onButtonLongClick(BUTTON_HOME);
+        verify(mockSystemUiProxy, times(0)).startAssistant(any());
+    }
+}
diff --git a/res/drawable/ic_split_horizontal.xml b/res/drawable/ic_split_horizontal.xml
new file mode 100644
index 0000000..ee710d0
--- /dev/null
+++ b/res/drawable/ic_split_horizontal.xml
@@ -0,0 +1,9 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="20dp"
+    android:height="16dp"
+    android:viewportWidth="20"
+    android:viewportHeight="16">
+  <path
+      android:pathData="M18,14L13,14L13,2L18,2L18,14ZM20,14L20,2C20,0.9 19.1,-0 18,-0L13,-0C11.9,-0 11,0.9 11,2L11,14C11,15.1 11.9,16 13,16L18,16C19.1,16 20,15.1 20,14ZM7,14L2,14L2,2L7,2L7,14ZM9,14L9,2C9,0.9 8.1,-0 7,-0L2,-0C0.9,-0 -0,0.9 -0,2L-0,14C-0,15.1 0.9,16 2,16L7,16C8.1,16 9,15.1 9,14Z"
+      android:fillColor="#000000"/>
+</vector>
diff --git a/res/drawable/ic_split_left.xml b/res/drawable/ic_split_left.xml
new file mode 100644
index 0000000..fc9f699
--- /dev/null
+++ b/res/drawable/ic_split_left.xml
@@ -0,0 +1,9 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="20dp"
+    android:height="16dp"
+    android:viewportWidth="20"
+    android:viewportHeight="16">
+  <path
+      android:pathData="M-0,2L-0,14C-0,15.1 0.9,16 2,16L7,16C8.1,16 9,15.1 9,14L9,2C9,0.9 8.1,-0 7,-0L2,-0C0.9,-0 -0,0.9 -0,2ZM13,2L18,2L18,14L13,14L13,2ZM11,2L11,14C11,15.1 11.9,16 13,16L18,16C19.1,16 20,15.1 20,14L20,2C20,0.9 19.1,-0 18,-0L13,-0C11.9,-0 11,0.9 11,2Z"
+      android:fillColor="#000000"/>
+</vector>
diff --git a/res/drawable/ic_split_right.xml b/res/drawable/ic_split_right.xml
new file mode 100644
index 0000000..cc15622
--- /dev/null
+++ b/res/drawable/ic_split_right.xml
@@ -0,0 +1,9 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="20dp"
+    android:height="16dp"
+    android:viewportWidth="20"
+    android:viewportHeight="16">
+  <path
+      android:pathData="M20,14L20,2C20,0.9 19.1,-0 18,-0L13,-0C11.9,-0 11,0.9 11,2L11,14C11,15.1 11.9,16 13,16L18,16C19.1,16 20,15.1 20,14ZM7,14L2,14L2,2L7,2L7,14ZM9,14L9,2C9,0.9 8.1,-0 7,-0L2,-0C0.9,-0 -0,0.9 -0,2L-0,14C-0,15.1 0.9,16 2,16L7,16C8.1,16 9,15.1 9,14Z"
+      android:fillColor="#000000"/>
+</vector>
diff --git a/res/drawable/ic_split_top.xml b/res/drawable/ic_split_top.xml
new file mode 100644
index 0000000..f8c15bd
--- /dev/null
+++ b/res/drawable/ic_split_top.xml
@@ -0,0 +1,9 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="16dp"
+    android:height="20dp"
+    android:viewportWidth="16"
+    android:viewportHeight="20">
+  <path
+      android:pathData="M14,0H2C0.9,0 0,0.9 0,2V7C0,8.1 0.9,9 2,9H14C15.1,9 16,8.1 16,7V2C16,0.9 15.1,0 14,0ZM14,13V18H2V13H14ZM14,11H2C0.9,11 0,11.9 0,13V18C0,19.1 0.9,20 2,20H14C15.1,20 16,19.1 16,18V13C16,11.9 15.1,11 14,11Z"
+      android:fillColor="#000000"/>
+</vector>
diff --git a/res/drawable/ic_split_vertical.xml b/res/drawable/ic_split_vertical.xml
new file mode 100644
index 0000000..9bc9785
--- /dev/null
+++ b/res/drawable/ic_split_vertical.xml
@@ -0,0 +1,9 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:viewportWidth="24"
+    android:viewportHeight="24">
+  <path
+      android:pathData="M18,4V9H6V4H18ZM18,2H6C4.9,2 4,2.9 4,4V9C4,10.1 4.9,11 6,11H18C19.1,11 20,10.1 20,9V4C20,2.9 19.1,2 18,2ZM18,15V20H6V15H18ZM18,13H6C4.9,13 4,13.9 4,15V20C4,21.1 4.9,22 6,22H18C19.1,22 20,21.1 20,20V15C20,13.9 19.1,13 18,13Z"
+      android:fillColor="#000000"/>
+</vector>
diff --git a/src/com/android/launcher3/PagedView.java b/src/com/android/launcher3/PagedView.java
index 1ce7ebe..2c14f07 100644
--- a/src/com/android/launcher3/PagedView.java
+++ b/src/com/android/launcher3/PagedView.java
@@ -1749,20 +1749,23 @@
     public void onInitializeAccessibilityNodeInfo(AccessibilityNodeInfo info) {
         super.onInitializeAccessibilityNodeInfo(info);
         final boolean pagesFlipped = isPageOrderFlipped();
-        int offset = (mAllowOverScroll ? 0 : 1);
-        info.setScrollable(getPageCount() > offset);
-        if (getCurrentPage() < getPageCount() - offset) {
+        info.setScrollable(getPageCount() > 0);
+        int primaryScroll = mOrientationHandler.getPrimaryScroll(this);
+        if (getCurrentPage() < getPageCount() - getPanelCount()
+                || (getCurrentPage() == getPageCount() - getPanelCount()
+                && primaryScroll != getScrollForPage(getPageCount() - getPanelCount()))) {
             info.addAction(pagesFlipped ?
-                AccessibilityNodeInfo.AccessibilityAction.ACTION_SCROLL_BACKWARD
-                : AccessibilityNodeInfo.AccessibilityAction.ACTION_SCROLL_FORWARD);
+                    AccessibilityNodeInfo.AccessibilityAction.ACTION_SCROLL_BACKWARD
+                    : AccessibilityNodeInfo.AccessibilityAction.ACTION_SCROLL_FORWARD);
             info.addAction(mIsRtl ?
                 AccessibilityNodeInfo.AccessibilityAction.ACTION_PAGE_LEFT
                 : AccessibilityNodeInfo.AccessibilityAction.ACTION_PAGE_RIGHT);
         }
-        if (getCurrentPage() >= offset) {
+        if (getCurrentPage() > 0
+                || (getCurrentPage() == 0 && primaryScroll != getScrollForPage(0))) {
             info.addAction(pagesFlipped ?
-                AccessibilityNodeInfo.AccessibilityAction.ACTION_SCROLL_FORWARD
-                : AccessibilityNodeInfo.AccessibilityAction.ACTION_SCROLL_BACKWARD);
+                    AccessibilityNodeInfo.AccessibilityAction.ACTION_SCROLL_FORWARD
+                    : AccessibilityNodeInfo.AccessibilityAction.ACTION_SCROLL_BACKWARD);
             info.addAction(mIsRtl ?
                 AccessibilityNodeInfo.AccessibilityAction.ACTION_PAGE_RIGHT
                 : AccessibilityNodeInfo.AccessibilityAction.ACTION_PAGE_LEFT);
@@ -1807,16 +1810,16 @@
             } break;
             case android.R.id.accessibilityActionPageRight: {
                 if (!mIsRtl) {
-                  return scrollRight();
+                    return scrollRight();
                 } else {
-                  return scrollLeft();
+                    return scrollLeft();
                 }
             }
             case android.R.id.accessibilityActionPageLeft: {
                 if (!mIsRtl) {
-                  return scrollLeft();
+                    return scrollLeft();
                 } else {
-                  return scrollRight();
+                    return scrollRight();
                 }
             }
         }
diff --git a/src/com/android/launcher3/touch/LandscapePagedViewHandler.java b/src/com/android/launcher3/touch/LandscapePagedViewHandler.java
index c255225..0c39067 100644
--- a/src/com/android/launcher3/touch/LandscapePagedViewHandler.java
+++ b/src/com/android/launcher3/touch/LandscapePagedViewHandler.java
@@ -357,7 +357,7 @@
     public List<SplitPositionOption> getSplitPositionOptions(DeviceProfile dp) {
         // Add "left" side of phone which is actually the top
         return Collections.singletonList(new SplitPositionOption(
-                R.drawable.ic_split_screen, R.string.split_screen_position_left,
+                R.drawable.ic_split_left, R.string.split_screen_position_left,
                 STAGE_POSITION_TOP_OR_LEFT, STAGE_TYPE_MAIN));
     }
 
diff --git a/src/com/android/launcher3/touch/PortraitPagedViewHandler.java b/src/com/android/launcher3/touch/PortraitPagedViewHandler.java
index e69944a..b9f1b66 100644
--- a/src/com/android/launcher3/touch/PortraitPagedViewHandler.java
+++ b/src/com/android/launcher3/touch/PortraitPagedViewHandler.java
@@ -370,28 +370,27 @@
     public List<SplitPositionOption> getSplitPositionOptions(DeviceProfile dp) {
         List<SplitPositionOption> options = new ArrayList<>(1);
         // Add both left and right options if we're in tablet mode
-        // TODO: Add in correct icons
         if (dp.isTablet && dp.isLandscape) {
             options.add(new SplitPositionOption(
-                    R.drawable.ic_split_screen, R.string.split_screen_position_right,
+                    R.drawable.ic_split_right, R.string.split_screen_position_right,
                     STAGE_POSITION_BOTTOM_OR_RIGHT, STAGE_TYPE_MAIN));
             options.add(new SplitPositionOption(
-                    R.drawable.ic_split_screen, R.string.split_screen_position_left,
+                    R.drawable.ic_split_left, R.string.split_screen_position_left,
                     STAGE_POSITION_TOP_OR_LEFT, STAGE_TYPE_MAIN));
         } else {
             if (dp.isSeascape()) {
                 // Add left/right options
                 options.add(new SplitPositionOption(
-                        R.drawable.ic_split_screen, R.string.split_screen_position_right,
+                        R.drawable.ic_split_right, R.string.split_screen_position_right,
                         STAGE_POSITION_BOTTOM_OR_RIGHT, STAGE_TYPE_MAIN));
             } else if (dp.isLandscape) {
                 options.add(new SplitPositionOption(
-                        R.drawable.ic_split_screen, R.string.split_screen_position_left,
+                        R.drawable.ic_split_left, R.string.split_screen_position_left,
                         STAGE_POSITION_TOP_OR_LEFT, STAGE_TYPE_MAIN));
             } else {
                 // Only add top option
                 options.add(new SplitPositionOption(
-                        R.drawable.ic_split_screen, R.string.split_screen_position_top,
+                        R.drawable.ic_split_top, R.string.split_screen_position_top,
                         STAGE_POSITION_TOP_OR_LEFT, STAGE_TYPE_MAIN));
             }
         }
diff --git a/src/com/android/launcher3/touch/SeascapePagedViewHandler.java b/src/com/android/launcher3/touch/SeascapePagedViewHandler.java
index 539e3f8..ce2e136 100644
--- a/src/com/android/launcher3/touch/SeascapePagedViewHandler.java
+++ b/src/com/android/launcher3/touch/SeascapePagedViewHandler.java
@@ -115,7 +115,7 @@
     public List<SplitPositionOption> getSplitPositionOptions(DeviceProfile dp) {
         // Add "right" option which is actually the top
         return Collections.singletonList(new SplitPositionOption(
-                R.drawable.ic_split_screen, R.string.split_screen_position_right,
+                R.drawable.ic_split_right, R.string.split_screen_position_right,
                 STAGE_POSITION_TOP_OR_LEFT, STAGE_TYPE_MAIN));
     }
 
diff --git a/src/com/android/launcher3/views/Snackbar.java b/src/com/android/launcher3/views/Snackbar.java
index 49fcd2e..f945819 100644
--- a/src/com/android/launcher3/views/Snackbar.java
+++ b/src/com/android/launcher3/views/Snackbar.java
@@ -28,8 +28,9 @@
 import android.view.MotionEvent;
 import android.widget.TextView;
 
+import androidx.annotation.Nullable;
+
 import com.android.launcher3.AbstractFloatingView;
-import com.android.launcher3.BaseDraggingActivity;
 import com.android.launcher3.R;
 import com.android.launcher3.anim.Interpolators;
 import com.android.launcher3.compat.AccessibilityManagerCompat;
@@ -44,7 +45,7 @@
     private static final long HIDE_DURATION_MS = 180;
     private static final int TIMEOUT_DURATION_MS = 4000;
 
-    private final BaseDraggingActivity mActivity;
+    private final ActivityContext mActivity;
     private Runnable mOnDismissed;
 
     public Snackbar(Context context, AttributeSet attrs) {
@@ -53,12 +54,19 @@
 
     public Snackbar(Context context, AttributeSet attrs, int defStyleAttr) {
         super(context, attrs, defStyleAttr);
-        mActivity = BaseDraggingActivity.fromContext(context);
+        mActivity = ActivityContext.lookupContext(context);
         inflate(context, R.layout.snackbar, this);
     }
 
-    public static void show(BaseDraggingActivity activity, int labelStringResId,
-            int actionStringResId, Runnable onDismissed, Runnable onActionClicked) {
+    /** Show a snackbar with just a label. */
+    public static <T extends Context & ActivityContext> void show(T activity, int labelStringRedId,
+            Runnable onDismissed) {
+        show(activity, labelStringRedId, NO_ID, onDismissed, null);
+    }
+
+    /** Show a snackbar with a label and action. */
+    public static <T extends Context & ActivityContext> void show(T activity, int labelStringResId,
+            int actionStringResId, Runnable onDismissed, @Nullable Runnable onActionClicked) {
         closeOpenViews(activity, true, TYPE_SNACKBAR);
         Snackbar snackbar = new Snackbar(activity, null);
         // Set some properties here since inflated xml only contains the children.
@@ -87,13 +95,30 @@
         params.setMargins(0, 0, 0, marginBottom + insets.bottom);
 
         TextView labelView = snackbar.findViewById(R.id.label);
-        TextView actionView = snackbar.findViewById(R.id.action);
         String labelText = res.getString(labelStringResId);
-        String actionText = res.getString(actionStringResId);
-        int totalContentWidth = (int) (labelView.getPaint().measureText(labelText)
-                + actionView.getPaint().measureText(actionText))
+        labelView.setText(labelText);
+
+        TextView actionView = snackbar.findViewById(R.id.action);
+        float actionWidth;
+        if (actionStringResId != NO_ID) {
+            String actionText = res.getString(actionStringResId);
+            actionWidth = actionView.getPaint().measureText(actionText)
+                    + actionView.getPaddingRight() + actionView.getPaddingLeft();
+            actionView.setText(actionText);
+            actionView.setOnClickListener(v -> {
+                if (onActionClicked != null) {
+                    onActionClicked.run();
+                }
+                snackbar.mOnDismissed = null;
+                snackbar.close(true);
+            });
+        } else {
+            actionWidth = 0;
+            actionView.setVisibility(GONE);
+        }
+
+        int totalContentWidth = (int) (labelView.getPaint().measureText(labelText) + actionWidth)
                 + labelView.getPaddingRight() + labelView.getPaddingLeft()
-                + actionView.getPaddingRight() + actionView.getPaddingLeft()
                 + padding * 2;
         if (totalContentWidth > params.width) {
             // The text doesn't fit in our standard width so update width to accommodate.
@@ -113,17 +138,8 @@
                 params.width = maxWidth;
             }
         }
-        labelView.setText(labelText);
-        actionView.setText(actionText);
-        actionView.setOnClickListener(v -> {
-            if (onActionClicked != null) {
-                onActionClicked.run();
-            }
-            snackbar.mOnDismissed = null;
-            snackbar.close(true);
-        });
-        snackbar.mOnDismissed = onDismissed;
 
+        snackbar.mOnDismissed = onDismissed;
         snackbar.setAlpha(0);
         snackbar.setScaleX(0.8f);
         snackbar.setScaleY(0.8f);
diff --git a/tests/tapl/com/android/launcher3/tapl/Widgets.java b/tests/tapl/com/android/launcher3/tapl/Widgets.java
index 6e7264a..0bac2ca 100644
--- a/tests/tapl/com/android/launcher3/tapl/Widgets.java
+++ b/tests/tapl/com/android/launcher3/tapl/Widgets.java
@@ -77,7 +77,8 @@
             mLauncher.scroll(
                     widgetsContainer,
                     Direction.UP,
-                    new Rect(0, 0, mLauncher.getVisibleBounds(widgetsContainer).width(), 0),
+                    new Rect(0, 0, mLauncher.getRightGestureMarginInContainer(widgetsContainer) + 1,
+                            0),
                     FLING_STEPS, false);
             try (LauncherInstrumentation.Closable c1 = mLauncher.addContextLayer("flung back")) {
                 verifyActiveContainer();