diff --git a/go/src/com/android/launcher3/model/WidgetsModel.java b/go/src/com/android/launcher3/model/WidgetsModel.java
index 1aa5d03..9a000d6 100644
--- a/go/src/com/android/launcher3/model/WidgetsModel.java
+++ b/go/src/com/android/launcher3/model/WidgetsModel.java
@@ -41,8 +41,10 @@
  */
 public class WidgetsModel {
 
-    // True is the widget support is disabled.
+    // True if the widget support is disabled.
     public static final boolean GO_DISABLE_WIDGETS = true;
+    // True if the shortcut support is disabled.
+    public static final boolean GO_DISABLE_SHORTCUTS = true;
     public static final boolean GO_DISABLE_NOTIFICATION_DOTS = true;
 
     private static final ArrayList<WidgetsListBaseEntry> EMPTY_WIDGET_LIST = new ArrayList<>();
diff --git a/quickstep/src/com/android/launcher3/taskbar/TaskbarActivityContext.java b/quickstep/src/com/android/launcher3/taskbar/TaskbarActivityContext.java
index 19d6af5..8697b69 100644
--- a/quickstep/src/com/android/launcher3/taskbar/TaskbarActivityContext.java
+++ b/quickstep/src/com/android/launcher3/taskbar/TaskbarActivityContext.java
@@ -868,6 +868,10 @@
         btv.post(() -> mControllers.taskbarPopupController.showForIcon(btv));
     }
 
+    public boolean isInApp() {
+        return mControllers.taskbarStashController.isInApp();
+    }
+
     protected void dumpLogs(String prefix, PrintWriter pw) {
         pw.println(prefix + "TaskbarActivityContext:");
 
diff --git a/quickstep/src/com/android/quickstep/AbsSwipeUpHandler.java b/quickstep/src/com/android/quickstep/AbsSwipeUpHandler.java
index b7a50fc..81a5c1c 100644
--- a/quickstep/src/com/android/quickstep/AbsSwipeUpHandler.java
+++ b/quickstep/src/com/android/quickstep/AbsSwipeUpHandler.java
@@ -340,6 +340,8 @@
             return ActiveGestureErrorDetector.GestureEvent.STATE_CAPTURE_SCREENSHOT;
         } else if (stateFlag == STATE_HANDLER_INVALIDATED) {
             return ActiveGestureErrorDetector.GestureEvent.STATE_HANDLER_INVALIDATED;
+        } else if (stateFlag == STATE_LAUNCHER_DRAWN) {
+            return ActiveGestureErrorDetector.GestureEvent.STATE_LAUNCHER_DRAWN;
         }
         return null;
     }
diff --git a/quickstep/src/com/android/quickstep/MultiStateCallback.java b/quickstep/src/com/android/quickstep/MultiStateCallback.java
index 56e7fb5..a68bea2 100644
--- a/quickstep/src/com/android/quickstep/MultiStateCallback.java
+++ b/quickstep/src/com/android/quickstep/MultiStateCallback.java
@@ -116,7 +116,13 @@
             if (gestureEvent == null) {
                 continue;
             }
-            ActiveGestureLog.INSTANCE.trackEvent(gestureEvent);
+            if (gestureEvent.mLogEvent && gestureEvent.mTrackEvent) {
+                ActiveGestureLog.INSTANCE.addLog(gestureEvent.name(), gestureEvent);
+            } else if (gestureEvent.mLogEvent) {
+                ActiveGestureLog.INSTANCE.addLog(gestureEvent.name());
+            } else if (gestureEvent.mTrackEvent) {
+                ActiveGestureLog.INSTANCE.trackEvent(gestureEvent);
+            }
         }
     }
 
diff --git a/quickstep/src/com/android/quickstep/RecentTasksList.java b/quickstep/src/com/android/quickstep/RecentTasksList.java
index 813e687..5a9862c 100644
--- a/quickstep/src/com/android/quickstep/RecentTasksList.java
+++ b/quickstep/src/com/android/quickstep/RecentTasksList.java
@@ -27,9 +27,9 @@
 
 import androidx.annotation.VisibleForTesting;
 
-import com.android.quickstep.util.GroupTask;
 import com.android.launcher3.util.LooperExecutor;
 import com.android.launcher3.util.SplitConfigurationOptions;
+import com.android.quickstep.util.GroupTask;
 import com.android.systemui.shared.recents.model.Task;
 import com.android.systemui.shared.system.KeyguardManagerCompat;
 import com.android.wm.shell.recents.IRecentTasksListener;
@@ -254,8 +254,12 @@
 
         TaskLoadResult allTasks = new TaskLoadResult(requestId, loadKeysOnly, rawTasks.size());
         for (GroupedRecentTaskInfo rawTask : rawTasks) {
-            ActivityManager.RecentTaskInfo taskInfo1 = rawTask.mTaskInfo1;
-            ActivityManager.RecentTaskInfo taskInfo2 = rawTask.mTaskInfo2;
+            if (rawTask.getType() == GroupedRecentTaskInfo.TYPE_FREEFORM) {
+                // TODO: add entry for freeform tasks
+                continue;
+            }
+            ActivityManager.RecentTaskInfo taskInfo1 = rawTask.getTaskInfo1();
+            ActivityManager.RecentTaskInfo taskInfo2 = rawTask.getTaskInfo2();
             Task.TaskKey task1Key = new Task.TaskKey(taskInfo1);
             Task task1 = loadKeysOnly
                     ? new Task(task1Key)
@@ -272,7 +276,7 @@
                 task2.setLastSnapshotData(taskInfo2);
             }
             final SplitConfigurationOptions.SplitBounds launcherSplitBounds =
-                    convertSplitBounds(rawTask.mSplitBounds);
+                    convertSplitBounds(rawTask.getSplitBounds());
             allTasks.add(new GroupTask(task1, task2, launcherSplitBounds));
         }
 
@@ -310,8 +314,8 @@
                 mSysUiProxy.getRecentTasks(Integer.MAX_VALUE, currentUserId);
         writer.println(prefix + "  rawTasks=[");
         for (GroupedRecentTaskInfo task : rawTasks) {
-            writer.println(prefix + "    t1=" + task.mTaskInfo1.taskId
-                    + " t2=" + (task.mTaskInfo2 != null ? task.mTaskInfo2.taskId : "-1"));
+            writer.println(prefix + "    t1=" + task.getTaskInfo1().taskId
+                    + " t2=" + (task.getTaskInfo2() != null ? task.getTaskInfo2().taskId : "-1"));
         }
         writer.println(prefix + "  ]");
     }
diff --git a/quickstep/src/com/android/quickstep/TouchInteractionService.java b/quickstep/src/com/android/quickstep/TouchInteractionService.java
index c650f29..040c55b 100644
--- a/quickstep/src/com/android/quickstep/TouchInteractionService.java
+++ b/quickstep/src/com/android/quickstep/TouchInteractionService.java
@@ -462,7 +462,8 @@
         mOverviewComponentObserver = new OverviewComponentObserver(this, mDeviceState);
         mOverviewCommandHelper = new OverviewCommandHelper(this,
                 mOverviewComponentObserver, mTaskAnimationManager);
-        mResetGestureInputConsumer = new ResetGestureInputConsumer(mTaskAnimationManager);
+        mResetGestureInputConsumer = new ResetGestureInputConsumer(
+                mTaskAnimationManager, mTaskbarManager::getCurrentActivityContext);
         mInputConsumer = InputConsumerController.getRecentsAnimationInputConsumer();
         mInputConsumer.registerInputConsumer();
         onSystemUiFlagsChanged(mDeviceState.getSystemUiStateFlags());
diff --git a/quickstep/src/com/android/quickstep/inputconsumers/ResetGestureInputConsumer.java b/quickstep/src/com/android/quickstep/inputconsumers/ResetGestureInputConsumer.java
index d34b40b..349f4d2 100644
--- a/quickstep/src/com/android/quickstep/inputconsumers/ResetGestureInputConsumer.java
+++ b/quickstep/src/com/android/quickstep/inputconsumers/ResetGestureInputConsumer.java
@@ -17,18 +17,25 @@
 
 import android.view.MotionEvent;
 
+import com.android.launcher3.taskbar.TaskbarActivityContext;
 import com.android.quickstep.InputConsumer;
 import com.android.quickstep.TaskAnimationManager;
 
+import java.util.function.Supplier;
+
 /**
  * A NO_OP input consumer which also resets any pending gesture
  */
 public class ResetGestureInputConsumer implements InputConsumer {
 
     private final TaskAnimationManager mTaskAnimationManager;
+    private final Supplier<TaskbarActivityContext> mActivityContextSupplier;
 
-    public ResetGestureInputConsumer(TaskAnimationManager taskAnimationManager) {
+    public ResetGestureInputConsumer(
+            TaskAnimationManager taskAnimationManager,
+            Supplier<TaskbarActivityContext> activityContextSupplier) {
         mTaskAnimationManager = taskAnimationManager;
+        mActivityContextSupplier = activityContextSupplier;
     }
 
     @Override
@@ -40,7 +47,9 @@
     public void onMotionEvent(MotionEvent ev) {
         if (ev.getAction() == MotionEvent.ACTION_DOWN
                 && mTaskAnimationManager.isRecentsAnimationRunning()) {
-            mTaskAnimationManager.finishRunningRecentsAnimation(false /* toHome */);
+            TaskbarActivityContext tac = mActivityContextSupplier.get();
+            mTaskAnimationManager.finishRunningRecentsAnimation(
+                    /* toHome= */ tac != null && !tac.isInApp());
         }
     }
 }
diff --git a/quickstep/src/com/android/quickstep/util/ActiveGestureErrorDetector.java b/quickstep/src/com/android/quickstep/util/ActiveGestureErrorDetector.java
index 54f632a..693ef10 100644
--- a/quickstep/src/com/android/quickstep/util/ActiveGestureErrorDetector.java
+++ b/quickstep/src/com/android/quickstep/util/ActiveGestureErrorDetector.java
@@ -46,7 +46,19 @@
         STATE_GESTURE_STARTED, STATE_GESTURE_COMPLETED, STATE_GESTURE_CANCELLED,
         STATE_END_TARGET_ANIMATION_FINISHED, STATE_RECENTS_SCROLLING_FINISHED,
         STATE_CAPTURE_SCREENSHOT, STATE_SCREENSHOT_CAPTURED, STATE_HANDLER_INVALIDATED,
-        STATE_RECENTS_ANIMATION_CANCELED
+        STATE_RECENTS_ANIMATION_CANCELED, STATE_LAUNCHER_DRAWN(true, false);
+
+        public final boolean mLogEvent;
+        public final boolean mTrackEvent;
+
+        GestureEvent() {
+            this(false, true);
+        }
+
+        GestureEvent(boolean logEvent, boolean trackEvent) {
+            mLogEvent = logEvent;
+            mTrackEvent = trackEvent;
+        }
     }
 
     private ActiveGestureErrorDetector() {}
@@ -168,6 +180,7 @@
                     case STATE_END_TARGET_ANIMATION_FINISHED:
                     case STATE_CAPTURE_SCREENSHOT:
                     case STATE_HANDLER_INVALIDATED:
+                    case STATE_LAUNCHER_DRAWN:
                     default:
                         // No-Op
                 }
diff --git a/quickstep/src/com/android/quickstep/views/GroupedTaskView.java b/quickstep/src/com/android/quickstep/views/GroupedTaskView.java
index 2539ed6..0bed51d 100644
--- a/quickstep/src/com/android/quickstep/views/GroupedTaskView.java
+++ b/quickstep/src/com/android/quickstep/views/GroupedTaskView.java
@@ -250,8 +250,7 @@
 
     @Override
     public void setOverlayEnabled(boolean overlayEnabled) {
-        super.setOverlayEnabled(overlayEnabled);
-        mSnapshotView2.setOverlayEnabled(overlayEnabled);
+        // Intentional no-op to prevent setting smart actions overlay on thumbnails
     }
 
     @Override
diff --git a/quickstep/src/com/android/quickstep/views/OverviewActionsView.java b/quickstep/src/com/android/quickstep/views/OverviewActionsView.java
index 083756a..08a17c4 100644
--- a/quickstep/src/com/android/quickstep/views/OverviewActionsView.java
+++ b/quickstep/src/com/android/quickstep/views/OverviewActionsView.java
@@ -53,7 +53,9 @@
             HIDDEN_NON_ZERO_ROTATION,
             HIDDEN_NO_TASKS,
             HIDDEN_NO_RECENTS,
-            HIDDEN_SPLIT_SCREEN})
+            HIDDEN_SPLIT_SCREEN,
+            HIDDEN_SPLIT_SELECT_ACTIVE
+    })
     @Retention(RetentionPolicy.SOURCE)
     public @interface ActionsHiddenFlags { }
 
@@ -61,6 +63,7 @@
     public static final int HIDDEN_NO_TASKS = 1 << 1;
     public static final int HIDDEN_NO_RECENTS = 1 << 2;
     public static final int HIDDEN_SPLIT_SCREEN = 1 << 3;
+    public static final int HIDDEN_SPLIT_SELECT_ACTIVE = 1 << 4;
 
     @IntDef(flag = true, value = {
             DISABLED_SCROLLING,
@@ -79,6 +82,11 @@
     private static final int INDEX_HIDDEN_FLAGS_ALPHA = 3;
     private static final int INDEX_SHARE_TARGET_ALPHA = 4;
 
+    public @interface SplitButtonDisabledFlags { }
+
+    public static final int FLAG_IS_NOT_TABLET = 1 << 0;
+    public static final int FLAG_SINGLE_TASK = 1 << 1;
+
     private MultiValueAlpha mMultiValueAlpha;
     private Button mSplitButton;
 
@@ -88,6 +96,9 @@
     @ActionsDisabledFlags
     protected int mDisabledFlags;
 
+    @SplitButtonDisabledFlags
+    private int mSplitButtonDisabledFlags;
+
     @Nullable
     protected T mCallbacks;
 
@@ -182,6 +193,20 @@
         LayoutUtils.setViewEnabled(this, isEnabled);
     }
 
+    /**
+     * Updates the proper flags to indicate whether the "Split screen" button should be enabled.
+     *
+     * @param flag          The flag to update.
+     * @param enable        Whether to enable the disable flag: True will cause view to be disabled.
+     */
+    public void updateSplitButtonFlags(@SplitButtonDisabledFlags int flag, boolean enable) {
+        if (enable) {
+            mSplitButtonDisabledFlags |= flag;
+        } else {
+            mSplitButtonDisabledFlags &= ~flag;
+        }
+    }
+
     public AlphaProperty getContentAlpha() {
         return mMultiValueAlpha.getProperty(INDEX_CONTENT_ALPHA);
     }
@@ -263,12 +288,17 @@
                 0, 0, 0);
     }
 
-    public void setSplitButtonVisible(boolean visible) {
+    /**
+     * Shows/hides the "Split" button based on the status of mHiddenFlags.
+     */
+    public void updateSplitButtonVisibility() {
         if (mSplitButton == null) {
             return;
         }
-
-        mSplitButton.setVisibility(visible ? VISIBLE : GONE);
-        findViewById(R.id.action_split_space).setVisibility(visible ? VISIBLE : GONE);
+        boolean shouldBeVisible = mSplitButtonDisabledFlags == 0
+                // and neither of these flags are active
+                && (mHiddenFlags & (HIDDEN_SPLIT_SCREEN | HIDDEN_SPLIT_SELECT_ACTIVE)) == 0;
+        mSplitButton.setVisibility(shouldBeVisible ? VISIBLE : GONE);
+        findViewById(R.id.action_split_space).setVisibility(shouldBeVisible ? VISIBLE : GONE);
     }
 }
diff --git a/quickstep/src/com/android/quickstep/views/RecentsView.java b/quickstep/src/com/android/quickstep/views/RecentsView.java
index f00e858..f8bf3d8 100644
--- a/quickstep/src/com/android/quickstep/views/RecentsView.java
+++ b/quickstep/src/com/android/quickstep/views/RecentsView.java
@@ -52,10 +52,13 @@
 import static com.android.launcher3.util.SystemUiController.UI_STATE_FULLSCREEN_TASK;
 import static com.android.quickstep.TaskUtils.checkCurrentOrManagedUserId;
 import static com.android.quickstep.views.ClearAllButton.DISMISS_ALPHA;
+import static com.android.quickstep.views.OverviewActionsView.FLAG_IS_NOT_TABLET;
+import static com.android.quickstep.views.OverviewActionsView.FLAG_SINGLE_TASK;
 import static com.android.quickstep.views.OverviewActionsView.HIDDEN_NON_ZERO_ROTATION;
 import static com.android.quickstep.views.OverviewActionsView.HIDDEN_NO_RECENTS;
 import static com.android.quickstep.views.OverviewActionsView.HIDDEN_NO_TASKS;
 import static com.android.quickstep.views.OverviewActionsView.HIDDEN_SPLIT_SCREEN;
+import static com.android.quickstep.views.OverviewActionsView.HIDDEN_SPLIT_SELECT_ACTIVE;
 
 import android.animation.Animator;
 import android.animation.AnimatorListenerAdapter;
@@ -3387,11 +3390,11 @@
     private void updateCurrentTaskActionsVisibility() {
         boolean isCurrentSplit = getCurrentPageTaskView() instanceof GroupedTaskView;
         mActionsView.updateHiddenFlags(HIDDEN_SPLIT_SCREEN, isCurrentSplit);
-        if (isCurrentSplit) {
-            return;
-        }
-        mActionsView.setSplitButtonVisible(
-                mActivity.getDeviceProfile().isTablet && getTaskViewCount() > 1);
+        mActionsView.updateHiddenFlags(HIDDEN_SPLIT_SELECT_ACTIVE, isSplitSelectionActive());
+        mActionsView.updateSplitButtonFlags(FLAG_IS_NOT_TABLET,
+                !mActivity.getDeviceProfile().isTablet);
+        mActionsView.updateSplitButtonFlags(FLAG_SINGLE_TASK, getTaskViewCount() <= 1);
+        mActionsView.updateSplitButtonVisibility();
     }
 
     /**
diff --git a/quickstep/tests/src/com/android/quickstep/RecentTasksListTest.java b/quickstep/tests/src/com/android/quickstep/RecentTasksListTest.java
index 4e49716..262dc37 100644
--- a/quickstep/tests/src/com/android/quickstep/RecentTasksListTest.java
+++ b/quickstep/tests/src/com/android/quickstep/RecentTasksListTest.java
@@ -70,7 +70,7 @@
 
     @Test
     public void loadTasksInBackground_onlyKeys_noValidTaskDescription() {
-        GroupedRecentTaskInfo recentTaskInfos = new GroupedRecentTaskInfo(
+        GroupedRecentTaskInfo recentTaskInfos = GroupedRecentTaskInfo.forSplitTasks(
                 new ActivityManager.RecentTaskInfo(), new ActivityManager.RecentTaskInfo(), null);
         when(mockSystemUiProxy.getRecentTasks(anyInt(), anyInt()))
                 .thenReturn(new ArrayList<>(Collections.singletonList(recentTaskInfos)));
@@ -90,8 +90,8 @@
         task1.taskDescription = new ActivityManager.TaskDescription(taskDescription);
         ActivityManager.RecentTaskInfo task2 = new ActivityManager.RecentTaskInfo();
         task2.taskDescription = new ActivityManager.TaskDescription();
-        GroupedRecentTaskInfo recentTaskInfos = new GroupedRecentTaskInfo(
-                task1, task2, null);
+        GroupedRecentTaskInfo recentTaskInfos = GroupedRecentTaskInfo.forSplitTasks(task1, task2,
+                null);
         when(mockSystemUiProxy.getRecentTasks(anyInt(), anyInt()))
                 .thenReturn(new ArrayList<>(Collections.singletonList(recentTaskInfos)));
 
diff --git a/res/layout/user_folder_icon_normalized.xml b/res/layout/user_folder_icon_normalized.xml
index 87bf33d..4dee6e7 100644
--- a/res/layout/user_folder_icon_normalized.xml
+++ b/res/layout/user_folder_icon_normalized.xml
@@ -34,7 +34,8 @@
         android:clipChildren="false"
         android:orientation="horizontal"
         android:paddingLeft="12dp"
-        android:paddingRight="12dp" >
+        android:paddingRight="12dp"
+        android:alpha="0">
 
         <com.android.launcher3.folder.FolderNameEditText
             android:id="@+id/folder_name"
diff --git a/src/com/android/launcher3/PendingAddItemInfo.java b/src/com/android/launcher3/PendingAddItemInfo.java
index be994ee..b7a22fc 100644
--- a/src/com/android/launcher3/PendingAddItemInfo.java
+++ b/src/com/android/launcher3/PendingAddItemInfo.java
@@ -18,6 +18,7 @@
 
 import android.content.ComponentName;
 
+import androidx.annotation.NonNull;
 import androidx.annotation.Nullable;
 
 import com.android.launcher3.model.data.ItemInfo;
@@ -43,6 +44,7 @@
     /**
      * Returns shallow copy of the object.
      */
+    @NonNull
     @Override
     public ItemInfo makeShallowCopy() {
         PendingAddItemInfo itemInfo = new PendingAddItemInfo();
diff --git a/src/com/android/launcher3/allapps/AllAppsTransitionController.java b/src/com/android/launcher3/allapps/AllAppsTransitionController.java
index ecc9d7e..1cec9d0 100644
--- a/src/com/android/launcher3/allapps/AllAppsTransitionController.java
+++ b/src/com/android/launcher3/allapps/AllAppsTransitionController.java
@@ -227,7 +227,7 @@
     @Override
     public void setStateWithAnimation(LauncherState toState,
             StateAnimationConfig config, PendingAnimation builder) {
-        if (NORMAL.equals(toState) && mLauncher.isInState(ALL_APPS)) {
+        if (mLauncher.isInState(ALL_APPS) && !ALL_APPS.equals(toState)) {
             builder.addEndListener(success -> {
                 // Reset pull back progress and alpha after switching states.
                 ALL_APPS_PULL_BACK_TRANSLATION.set(this, 0f);
diff --git a/src/com/android/launcher3/anim/AnimationSuccessListener.java b/src/com/android/launcher3/anim/AnimationSuccessListener.java
index a312070..6196df2 100644
--- a/src/com/android/launcher3/anim/AnimationSuccessListener.java
+++ b/src/com/android/launcher3/anim/AnimationSuccessListener.java
@@ -19,6 +19,8 @@
 import android.animation.Animator;
 import android.animation.AnimatorListenerAdapter;
 
+import androidx.annotation.CallSuper;
+
 /**
  * Extension of {@link AnimatorListenerAdapter} for listening for non-cancelled animations
  */
@@ -27,6 +29,7 @@
     protected boolean mCancelled = false;
 
     @Override
+    @CallSuper
     public void onAnimationCancel(Animator animation) {
         mCancelled = true;
     }
diff --git a/src/com/android/launcher3/config/FeatureFlags.java b/src/com/android/launcher3/config/FeatureFlags.java
index e979a65..ffce570 100644
--- a/src/com/android/launcher3/config/FeatureFlags.java
+++ b/src/com/android/launcher3/config/FeatureFlags.java
@@ -65,12 +65,12 @@
      */
     public static final BooleanFlag ENABLE_INPUT_CONSUMER_REASON_LOGGING = getDebugFlag(
             "ENABLE_INPUT_CONSUMER_REASON_LOGGING",
-            false,
+            true,
             "Log the reason why an Input Consumer was selected for a gesture.");
 
     public static final BooleanFlag ENABLE_GESTURE_ERROR_DETECTION = getDebugFlag(
             "ENABLE_GESTURE_ERROR_DETECTION",
-            false,
+            true,
             "Analyze gesture events and log detected errors");
 
     // When enabled the promise icon is visible in all apps while installation an app.
diff --git a/src/com/android/launcher3/icons/ShortcutCachingLogic.java b/src/com/android/launcher3/icons/ShortcutCachingLogic.java
index 4890ba6..d5a79dd 100644
--- a/src/com/android/launcher3/icons/ShortcutCachingLogic.java
+++ b/src/com/android/launcher3/icons/ShortcutCachingLogic.java
@@ -16,7 +16,7 @@
 
 package com.android.launcher3.icons;
 
-import static com.android.launcher3.model.WidgetsModel.GO_DISABLE_WIDGETS;
+import static com.android.launcher3.model.WidgetsModel.GO_DISABLE_SHORTCUTS;
 
 import android.content.ComponentName;
 import android.content.Context;
@@ -100,7 +100,7 @@
      * Launcher specific checks
      */
     public static Drawable getIcon(Context context, ShortcutInfo shortcutInfo, int density) {
-        if (GO_DISABLE_WIDGETS) {
+        if (GO_DISABLE_SHORTCUTS) {
             return null;
         }
         try {
diff --git a/src/com/android/launcher3/model/BgDataModel.java b/src/com/android/launcher3/model/BgDataModel.java
index de23c4b..ffb0f2f 100644
--- a/src/com/android/launcher3/model/BgDataModel.java
+++ b/src/com/android/launcher3/model/BgDataModel.java
@@ -17,7 +17,7 @@
 
 import static android.content.pm.LauncherApps.ShortcutQuery.FLAG_GET_KEY_FIELDS_ONLY;
 
-import static com.android.launcher3.model.WidgetsModel.GO_DISABLE_WIDGETS;
+import static com.android.launcher3.model.WidgetsModel.GO_DISABLE_SHORTCUTS;
 import static com.android.launcher3.shortcuts.ShortcutRequest.PINNED;
 
 import static java.util.stream.Collectors.groupingBy;
@@ -286,7 +286,7 @@
      * shortcuts and unpinning any extra shortcuts.
      */
     public synchronized void updateShortcutPinnedState(Context context, UserHandle user) {
-        if (GO_DISABLE_WIDGETS) {
+        if (GO_DISABLE_SHORTCUTS) {
             return;
         }
 
diff --git a/src/com/android/launcher3/model/ItemInstallQueue.java b/src/com/android/launcher3/model/ItemInstallQueue.java
index 229bb2d..69f9b53 100644
--- a/src/com/android/launcher3/model/ItemInstallQueue.java
+++ b/src/com/android/launcher3/model/ItemInstallQueue.java
@@ -288,6 +288,7 @@
         }
 
         @Override
+        @Nullable
         public Intent getIntent() {
             return intent;
         }
diff --git a/src/com/android/launcher3/model/data/AppInfo.java b/src/com/android/launcher3/model/data/AppInfo.java
index 24e7dd3..34972e7 100644
--- a/src/com/android/launcher3/model/data/AppInfo.java
+++ b/src/com/android/launcher3/model/data/AppInfo.java
@@ -29,6 +29,7 @@
 import android.os.UserManager;
 
 import androidx.annotation.NonNull;
+import androidx.annotation.Nullable;
 import androidx.annotation.VisibleForTesting;
 
 import com.android.launcher3.LauncherSettings;
@@ -65,6 +66,7 @@
     }
 
     @Override
+    @Nullable
     public Intent getIntent() {
         return intent;
     }
diff --git a/src/com/android/launcher3/model/data/FolderInfo.java b/src/com/android/launcher3/model/data/FolderInfo.java
index 8386adb..524b769 100644
--- a/src/com/android/launcher3/model/data/FolderInfo.java
+++ b/src/com/android/launcher3/model/data/FolderInfo.java
@@ -26,6 +26,7 @@
 
 import android.os.Process;
 
+import androidx.annotation.NonNull;
 import androidx.annotation.Nullable;
 
 import com.android.launcher3.LauncherSettings;
@@ -154,7 +155,7 @@
     }
 
     @Override
-    public void onAddToDatabase(ContentWriter writer) {
+    public void onAddToDatabase(@NonNull ContentWriter writer) {
         super.onAddToDatabase(writer);
         writer.put(LauncherSettings.Favorites.TITLE, title)
                 .put(LauncherSettings.Favorites.OPTIONS, options);
@@ -206,8 +207,9 @@
         return String.format("%s; labelState=%s", super.dumpProperties(), getLabelState());
     }
 
+    @NonNull
     @Override
-    public LauncherAtom.ItemInfo buildProto(FolderInfo fInfo) {
+    public LauncherAtom.ItemInfo buildProto(@Nullable FolderInfo fInfo) {
         FolderIcon.Builder folderIcon = FolderIcon.newBuilder()
                 .setCardinality(contents.size());
         if (LabelState.SUGGESTED.equals(getLabelState())) {
@@ -261,6 +263,7 @@
                                 : LabelState.SUGGESTED;
     }
 
+    @NonNull
     @Override
     public ItemInfo makeShallowCopy() {
         FolderInfo folderInfo = new FolderInfo();
@@ -272,6 +275,7 @@
     /**
      * Returns {@link LauncherAtom.FolderIcon} wrapped as {@link LauncherAtom.ItemInfo} for logging.
      */
+    @NonNull
     @Override
     public LauncherAtom.ItemInfo buildProto() {
         return buildProto(null);
diff --git a/src/com/android/launcher3/model/data/ItemInfo.java b/src/com/android/launcher3/model/data/ItemInfo.java
index 1e8e3ca..466f63f 100644
--- a/src/com/android/launcher3/model/data/ItemInfo.java
+++ b/src/com/android/launcher3/model/data/ItemInfo.java
@@ -42,6 +42,7 @@
 import android.os.Process;
 import android.os.UserHandle;
 
+import androidx.annotation.NonNull;
 import androidx.annotation.Nullable;
 
 import com.android.launcher3.LauncherSettings;
@@ -141,30 +142,34 @@
     /**
      * Title of the item
      */
+    @Nullable
     public CharSequence title;
 
     /**
      * Content description of the item.
      */
+    @Nullable
     public CharSequence contentDescription;
 
     /**
      * When the instance is created using {@link #copyFrom}, this field is used to keep track of
      * original {@link ComponentName}.
      */
+    @Nullable
     private ComponentName mComponentName;
 
+    @NonNull
     public UserHandle user;
 
     public ItemInfo() {
         user = Process.myUserHandle();
     }
 
-    protected ItemInfo(ItemInfo info) {
+    protected ItemInfo(@NonNull final ItemInfo info) {
         copyFrom(info);
     }
 
-    public void copyFrom(ItemInfo info) {
+    public void copyFrom(@NonNull final ItemInfo info) {
         id = info.id;
         title = info.title;
         cellX = info.cellX;
@@ -182,6 +187,7 @@
         mComponentName = info.getTargetComponent();
     }
 
+    @Nullable
     public Intent getIntent() {
         return null;
     }
@@ -209,7 +215,7 @@
                         : null;
     }
 
-    public void writeToValues(ContentWriter writer) {
+    public void writeToValues(@NonNull final ContentWriter writer) {
         writer.put(LauncherSettings.Favorites.ITEM_TYPE, itemType)
                 .put(LauncherSettings.Favorites.CONTAINER, container)
                 .put(LauncherSettings.Favorites.SCREEN, screenId)
@@ -220,7 +226,7 @@
                 .put(LauncherSettings.Favorites.RANK, rank);
     }
 
-    public void readFromValues(ContentValues values) {
+    public void readFromValues(@NonNull final ContentValues values) {
         itemType = values.getAsInteger(LauncherSettings.Favorites.ITEM_TYPE);
         container = values.getAsInteger(LauncherSettings.Favorites.CONTAINER);
         screenId = values.getAsInteger(LauncherSettings.Favorites.SCREEN);
@@ -234,7 +240,7 @@
     /**
      * Write the fields of this item to the DB
      */
-    public void onAddToDatabase(ContentWriter writer) {
+    public void onAddToDatabase(@NonNull final ContentWriter writer) {
         if (Workspace.EXTRA_EMPTY_SCREEN_IDS.contains(screenId)) {
             // We should never persist an item on the extra empty screen.
             throw new RuntimeException("Screen id should not be extra empty screen: " + screenId);
@@ -245,10 +251,12 @@
     }
 
     @Override
+    @NonNull
     public final String toString() {
         return getClass().getSimpleName() + "(" + dumpProperties() + ")";
     }
 
+    @NonNull
     protected String dumpProperties() {
         return "id=" + id
                 + " type=" + LauncherSettings.Favorites.itemTypeToString(itemType)
@@ -288,14 +296,17 @@
     /**
      * Creates {@link LauncherAtom.ItemInfo} with important fields and parent container info.
      */
+    @NonNull
     public LauncherAtom.ItemInfo buildProto() {
         return buildProto(null);
     }
 
     /**
      * Creates {@link LauncherAtom.ItemInfo} with important fields and parent container info.
+     * @param fInfo
      */
-    public LauncherAtom.ItemInfo buildProto(FolderInfo fInfo) {
+    @NonNull
+    public LauncherAtom.ItemInfo buildProto(@Nullable final FolderInfo fInfo) {
         LauncherAtom.ItemInfo.Builder itemBuilder = getDefaultItemInfoBuilder();
         Optional<ComponentName> nullableComponent = Optional.ofNullable(getTargetComponent());
         switch (itemType) {
@@ -373,6 +384,7 @@
         return itemBuilder.build();
     }
 
+    @NonNull
     protected LauncherAtom.ItemInfo.Builder getDefaultItemInfoBuilder() {
         LauncherAtom.ItemInfo.Builder itemBuilder = LauncherAtom.ItemInfo.newBuilder();
         itemBuilder.setIsWork(!Process.myUserHandle().equals(user));
@@ -383,6 +395,7 @@
     /**
      * Returns {@link ContainerInfo} used when logging this item.
      */
+    @NonNull
     public ContainerInfo getContainerInfo() {
         switch (container) {
             case CONTAINER_HOTSEAT:
@@ -447,6 +460,7 @@
      * Returns non-AOSP container wrapped by {@link ExtendedContainers} object. Should be overridden
      * by build variants.
      */
+    @NonNull
     protected ExtendedContainers getExtendedContainer() {
         return ExtendedContainers.getDefaultInstance();
     }
@@ -454,6 +468,7 @@
     /**
      * Returns shallow copy of the object.
      */
+    @NonNull
     public ItemInfo makeShallowCopy() {
         ItemInfo itemInfo = new ItemInfo();
         itemInfo.copyFrom(this);
@@ -463,7 +478,8 @@
     /**
      * Sets the title of the item and writes to DB model if needed.
      */
-    public void setTitle(CharSequence title, ModelWriter modelWriter) {
+    public void setTitle(@Nullable final CharSequence title,
+            @Nullable final ModelWriter modelWriter) {
         this.title = title;
     }
 }
diff --git a/src/com/android/launcher3/model/data/LauncherAppWidgetInfo.java b/src/com/android/launcher3/model/data/LauncherAppWidgetInfo.java
index e57a895..1fbe04f 100644
--- a/src/com/android/launcher3/model/data/LauncherAppWidgetInfo.java
+++ b/src/com/android/launcher3/model/data/LauncherAppWidgetInfo.java
@@ -29,6 +29,7 @@
 import android.content.res.Resources;
 import android.os.Process;
 
+import androidx.annotation.NonNull;
 import androidx.annotation.Nullable;
 
 import com.android.launcher3.Launcher;
@@ -191,7 +192,7 @@
     }
 
     @Override
-    public void onAddToDatabase(ContentWriter writer) {
+    public void onAddToDatabase(@NonNull ContentWriter writer) {
         super.onAddToDatabase(writer);
         writer.put(LauncherSettings.Favorites.APPWIDGET_ID, appWidgetId)
                 .put(LauncherSettings.Favorites.APPWIDGET_PROVIDER, providerName.flattenToString())
@@ -283,8 +284,9 @@
         }
     }
 
+    @NonNull
     @Override
-    public LauncherAtom.ItemInfo buildProto(FolderInfo folderInfo) {
+    public LauncherAtom.ItemInfo buildProto(@Nullable FolderInfo folderInfo) {
         LauncherAtom.ItemInfo info = super.buildProto(folderInfo);
         return info.toBuilder()
                 .setWidget(info.getWidget().toBuilder().setWidgetFeatures(widgetFeatures))
diff --git a/src/com/android/launcher3/model/data/SearchActionItemInfo.java b/src/com/android/launcher3/model/data/SearchActionItemInfo.java
index e879313..04042ea 100644
--- a/src/com/android/launcher3/model/data/SearchActionItemInfo.java
+++ b/src/com/android/launcher3/model/data/SearchActionItemInfo.java
@@ -24,6 +24,7 @@
 import android.os.Process;
 import android.os.UserHandle;
 
+import androidx.annotation.NonNull;
 import androidx.annotation.Nullable;
 
 import com.android.launcher3.LauncherAppState;
@@ -70,7 +71,7 @@
     }
 
     @Override
-    public void copyFrom(com.android.launcher3.model.data.ItemInfo info) {
+    public void copyFrom(@NonNull com.android.launcher3.model.data.ItemInfo info) {
         super.copyFrom(info);
         SearchActionItemInfo itemInfo = (SearchActionItemInfo) info;
         this.mFallbackPackageName = itemInfo.mFallbackPackageName;
@@ -91,6 +92,7 @@
     }
 
     @Override
+    @Nullable
     public Intent getIntent() {
         return mIntent;
     }
@@ -131,8 +133,9 @@
         return new SearchActionItemInfo(this);
     }
 
+    @NonNull
     @Override
-    public ItemInfo buildProto(FolderInfo fInfo) {
+    public ItemInfo buildProto(@Nullable FolderInfo fInfo) {
         SearchActionItem.Builder itemBuilder = SearchActionItem.newBuilder()
                 .setPackageName(mFallbackPackageName);
 
diff --git a/src/com/android/launcher3/model/data/WorkspaceItemInfo.java b/src/com/android/launcher3/model/data/WorkspaceItemInfo.java
index 2b3da33..1f16474 100644
--- a/src/com/android/launcher3/model/data/WorkspaceItemInfo.java
+++ b/src/com/android/launcher3/model/data/WorkspaceItemInfo.java
@@ -24,6 +24,7 @@
 import android.text.TextUtils;
 
 import androidx.annotation.NonNull;
+import androidx.annotation.Nullable;
 
 import com.android.launcher3.LauncherSettings;
 import com.android.launcher3.LauncherSettings.Favorites;
@@ -130,7 +131,7 @@
     }
 
     @Override
-    public void onAddToDatabase(ContentWriter writer) {
+    public void onAddToDatabase(@NonNull ContentWriter writer) {
         super.onAddToDatabase(writer);
         writer.put(Favorites.TITLE, title)
                 .put(Favorites.INTENT, getIntent())
@@ -147,6 +148,7 @@
     }
 
     @Override
+    @Nullable
     public Intent getIntent() {
         return intent;
     }
diff --git a/src/com/android/launcher3/shortcuts/ShortcutRequest.java b/src/com/android/launcher3/shortcuts/ShortcutRequest.java
index 5291ce4..07d3292 100644
--- a/src/com/android/launcher3/shortcuts/ShortcutRequest.java
+++ b/src/com/android/launcher3/shortcuts/ShortcutRequest.java
@@ -16,7 +16,7 @@
 
 package com.android.launcher3.shortcuts;
 
-import static com.android.launcher3.model.WidgetsModel.GO_DISABLE_WIDGETS;
+import static com.android.launcher3.model.WidgetsModel.GO_DISABLE_SHORTCUTS;
 
 import android.content.ComponentName;
 import android.content.Context;
@@ -46,7 +46,7 @@
             | ShortcutQuery.FLAG_MATCH_MANIFEST;
     public static final int PINNED = ShortcutQuery.FLAG_MATCH_PINNED;
 
-    private final ShortcutQuery mQuery = GO_DISABLE_WIDGETS ? null : new ShortcutQuery();
+    private final ShortcutQuery mQuery = GO_DISABLE_SHORTCUTS ? null : new ShortcutQuery();
 
     private final Context mContext;
     private final UserHandle mUserHandle;
@@ -73,7 +73,7 @@
      * @return A list of ShortcutInfo's associated with the given package.
      */
     public ShortcutRequest forPackage(String packageName, @Nullable List<String> shortcutIds) {
-        if (!GO_DISABLE_WIDGETS && packageName != null) {
+        if (!GO_DISABLE_SHORTCUTS && packageName != null) {
             mQuery.setPackage(packageName);
             mQuery.setShortcutIds(shortcutIds);
         }
@@ -81,7 +81,7 @@
     }
 
     public ShortcutRequest withContainer(@Nullable ComponentName activity) {
-        if (!GO_DISABLE_WIDGETS) {
+        if (!GO_DISABLE_SHORTCUTS) {
             if (activity == null) {
                 mFailed = true;
             } else {
@@ -92,7 +92,7 @@
     }
 
     public QueryResult query(int flags) {
-        if (GO_DISABLE_WIDGETS || mFailed) {
+        if (GO_DISABLE_SHORTCUTS || mFailed) {
             return QueryResult.DEFAULT;
         }
         mQuery.setQueryFlags(flags);
@@ -108,7 +108,7 @@
 
     public static class QueryResult extends ArrayList<ShortcutInfo> {
 
-        static final QueryResult DEFAULT = new QueryResult(GO_DISABLE_WIDGETS);
+        static final QueryResult DEFAULT = new QueryResult(GO_DISABLE_SHORTCUTS);
 
         private final boolean mWasSuccess;
 
diff --git a/src/com/android/launcher3/statemanager/StateManager.java b/src/com/android/launcher3/statemanager/StateManager.java
index c44e1e1..54e8e5b 100644
--- a/src/com/android/launcher3/statemanager/StateManager.java
+++ b/src/com/android/launcher3/statemanager/StateManager.java
@@ -345,6 +345,7 @@
 
             @Override
             public void onAnimationCancel(Animator animation) {
+                super.onAnimationCancel(animation);
                 onStateTransitionFailed(state);
             }
         };
diff --git a/src/com/android/launcher3/util/ShortcutUtil.java b/src/com/android/launcher3/util/ShortcutUtil.java
index 91cf835..79cafa0 100644
--- a/src/com/android/launcher3/util/ShortcutUtil.java
+++ b/src/com/android/launcher3/util/ShortcutUtil.java
@@ -34,7 +34,7 @@
      * Returns true when we should show depp shortcuts in shortcut menu for the item.
      */
     public static boolean supportsDeepShortcuts(ItemInfo info) {
-        return isActive(info) && isApp(info) && !WidgetsModel.GO_DISABLE_WIDGETS;
+        return isActive(info) && isApp(info) && !WidgetsModel.GO_DISABLE_SHORTCUTS;
     }
 
     /**
diff --git a/src/com/android/launcher3/views/AppLauncher.java b/src/com/android/launcher3/views/AppLauncher.java
index 19e66ab..dc07e45 100644
--- a/src/com/android/launcher3/views/AppLauncher.java
+++ b/src/com/android/launcher3/views/AppLauncher.java
@@ -16,7 +16,7 @@
 package com.android.launcher3.views;
 
 import static com.android.launcher3.logging.StatsLogManager.LauncherEvent.LAUNCHER_APP_LAUNCH_TAP;
-import static com.android.launcher3.model.WidgetsModel.GO_DISABLE_WIDGETS;
+import static com.android.launcher3.model.WidgetsModel.GO_DISABLE_SHORTCUTS;
 
 import android.app.ActivityOptions;
 import android.content.ActivityNotFoundException;
@@ -190,7 +190,7 @@
      */
     default void startShortcut(String packageName, String id, Rect sourceBounds,
             Bundle startActivityOptions, UserHandle user) {
-        if (GO_DISABLE_WIDGETS) {
+        if (GO_DISABLE_SHORTCUTS) {
             return;
         }
         try {
diff --git a/src/com/android/launcher3/widget/PendingAddWidgetInfo.java b/src/com/android/launcher3/widget/PendingAddWidgetInfo.java
index 470a800..ccf4b2e 100644
--- a/src/com/android/launcher3/widget/PendingAddWidgetInfo.java
+++ b/src/com/android/launcher3/widget/PendingAddWidgetInfo.java
@@ -19,6 +19,9 @@
 import android.content.Context;
 import android.os.Bundle;
 
+import androidx.annotation.NonNull;
+import androidx.annotation.Nullable;
+
 import com.android.launcher3.LauncherSettings;
 import com.android.launcher3.PendingAddItemInfo;
 import com.android.launcher3.logger.LauncherAtom;
@@ -66,8 +69,9 @@
         return WidgetSizes.getWidgetSizeOptions(context, componentName, spanX, spanY);
     }
 
+    @NonNull
     @Override
-    public LauncherAtom.ItemInfo buildProto(FolderInfo folderInfo) {
+    public LauncherAtom.ItemInfo buildProto(@Nullable FolderInfo folderInfo) {
         LauncherAtom.ItemInfo info = super.buildProto(folderInfo);
         return info.toBuilder()
                 .addItemAttributes(LauncherAppWidgetInfo.getAttribute(sourceContainer))
diff --git a/src_shortcuts_overrides/com/android/launcher3/model/WidgetsModel.java b/src_shortcuts_overrides/com/android/launcher3/model/WidgetsModel.java
index 702f343..13ad7a4 100644
--- a/src_shortcuts_overrides/com/android/launcher3/model/WidgetsModel.java
+++ b/src_shortcuts_overrides/com/android/launcher3/model/WidgetsModel.java
@@ -62,6 +62,8 @@
 
     // True is the widget support is disabled.
     public static final boolean GO_DISABLE_WIDGETS = false;
+    // True is the shortcut support is disabled.
+    public static final boolean GO_DISABLE_SHORTCUTS = false;
     public static final boolean GO_DISABLE_NOTIFICATION_DOTS = false;
 
     private static final String TAG = "WidgetsModel";
diff --git a/tests/tapl/com/android/launcher3/tapl/HomeQsb.java b/tests/tapl/com/android/launcher3/tapl/HomeQsb.java
index 5f92199..c365708 100644
--- a/tests/tapl/com/android/launcher3/tapl/HomeQsb.java
+++ b/tests/tapl/com/android/launcher3/tapl/HomeQsb.java
@@ -15,12 +15,21 @@
  */
 package com.android.launcher3.tapl;
 
+import androidx.annotation.NonNull;
+import androidx.test.uiautomator.By;
+import androidx.test.uiautomator.BySelector;
+import androidx.test.uiautomator.UiObject2;
+import androidx.test.uiautomator.Until;
+
 /**
  * Operations on home screen qsb.
  */
 public class HomeQsb {
 
     private final LauncherInstrumentation mLauncher;
+    private static final String ASSISTANT_APP_PACKAGE = "com.google.android.googlequicksearchbox";
+    private static final String ASSISTANT_ICON_RES_ID = "mic_icon";
+
 
     HomeQsb(LauncherInstrumentation launcher) {
         mLauncher = launcher;
@@ -28,6 +37,35 @@
     }
 
     /**
+     * Launch assistant app by tapping mic icon on qsb.
+     */
+    @NonNull
+    public LaunchedAppState launchAssistant() {
+        try (LauncherInstrumentation.Closable c = mLauncher.addContextLayer(
+                "want to click assistant mic icon button");
+             LauncherInstrumentation.Closable e = mLauncher.eventsCheck()) {
+            UiObject2 assistantIcon = mLauncher.waitForLauncherObject(ASSISTANT_ICON_RES_ID);
+
+            LauncherInstrumentation.log("HomeQsb.launchAssistant before click "
+                    + assistantIcon.getVisibleCenter() + " in "
+                    + mLauncher.getVisibleBounds(assistantIcon));
+
+            mLauncher.clickLauncherObject(assistantIcon);
+
+            try (LauncherInstrumentation.Closable c2 = mLauncher.addContextLayer("clicked")) {
+                // assert Assistant App Launched
+                BySelector selector = By.pkg(ASSISTANT_APP_PACKAGE);
+                mLauncher.assertTrue(
+                        "assistant app didn't start: (" + selector + ")",
+                        mLauncher.getDevice().wait(Until.hasObject(selector),
+                                LauncherInstrumentation.WAIT_TIME_MS)
+                );
+                return new LaunchedAppState(mLauncher);
+            }
+        }
+    }
+
+    /**
      * Show search result page from tapping qsb.
      */
     public SearchResultFromQsb showSearchResult() {