diff --git a/go/quickstep/src/com/android/launcher3/AppSharing.java b/go/quickstep/src/com/android/launcher3/AppSharing.java
index 7c66f6e..c252fba 100644
--- a/go/quickstep/src/com/android/launcher3/AppSharing.java
+++ b/go/quickstep/src/com/android/launcher3/AppSharing.java
@@ -22,6 +22,9 @@
 import android.content.pm.PackageInfo;
 import android.content.pm.PackageManager;
 import android.net.Uri;
+import android.os.Process;
+import android.os.UserHandle;
+import android.os.UserManager;
 import android.text.TextUtils;
 import android.util.Log;
 import android.view.View;
@@ -98,14 +101,19 @@
      * The Share App system shortcut, used to initiate p2p sharing of a given app
      */
     public final class Share extends SystemShortcut<Launcher> {
-        private PopupDataProvider mPopupDataProvider;
+        private final PopupDataProvider mPopupDataProvider;
+        private final boolean mSharingEnabledForUser;
 
         public Share(Launcher target, ItemInfo itemInfo) {
             super(R.drawable.ic_share, R.string.app_share_drop_target_label, target, itemInfo);
             mPopupDataProvider = target.getPopupDataProvider();
 
-            if (ENABLE_SHAREABILITY_CHECK) {
-                mShareabilityMgr = AppShareabilityManager.INSTANCE.get(target);
+            mSharingEnabledForUser = bluetoothSharingEnabled(target);
+            if (!mSharingEnabledForUser) {
+                setEnabled(false);
+            } else if (ENABLE_SHAREABILITY_CHECK) {
+                mShareabilityMgr =
+                        AppShareabilityManager.INSTANCE.get(target.getApplicationContext());
                 checkShareability(/* requestUpdateIfUnknown */ true);
             }
         }
@@ -144,7 +152,12 @@
             sendIntent.setType(APP_MIME_TYPE);
             sendIntent.setComponent(ComponentName.unflattenFromString(mSharingComponent));
 
-            mTarget.startActivitySafely(view, sendIntent, mItemInfo);
+            UserHandle user = mItemInfo.user;
+            if (user != null && !user.equals(Process.myUserHandle())) {
+                mTarget.startActivityAsUser(sendIntent, user);
+            } else {
+                mTarget.startActivitySafely(view, sendIntent, mItemInfo);
+            }
 
             AbstractFloatingView.closeAllOpenViews(mTarget);
         }
@@ -170,8 +183,15 @@
             }
         }
 
+        private boolean bluetoothSharingEnabled(Context context) {
+            return !context.getSystemService(UserManager.class)
+                    .hasUserRestriction(UserManager.DISALLOW_BLUETOOTH_SHARING, mItemInfo.user);
+        }
+
         private void showCannotShareToast(Context context) {
-            CharSequence text = context.getText(R.string.toast_p2p_app_not_shareable);
+            CharSequence text = (mSharingEnabledForUser)
+                    ? context.getText(R.string.toast_p2p_app_not_shareable)
+                    : context.getText(R.string.blocked_by_policy);
             int duration = Toast.LENGTH_SHORT;
             Toast.makeText(context, text, duration).show();
         }
diff --git a/go/quickstep/src/com/android/launcher3/model/AppShareabilityManager.java b/go/quickstep/src/com/android/launcher3/model/AppShareabilityManager.java
index cf80c35..0d0f700 100644
--- a/go/quickstep/src/com/android/launcher3/model/AppShareabilityManager.java
+++ b/go/quickstep/src/com/android/launcher3/model/AppShareabilityManager.java
@@ -47,7 +47,7 @@
  * Each app's status is retrieved from the Play Store's API. Statuses are cached in order
  * to limit extraneous calls to that API (which can be time-consuming).
  */
-public final class AppShareabilityManager {
+public class AppShareabilityManager {
     @Retention(SOURCE)
     @IntDef({
         ShareabilityStatus.UNKNOWN,
diff --git a/quickstep/src/com/android/quickstep/TaskOverlayFactory.java b/quickstep/src/com/android/quickstep/TaskOverlayFactory.java
index 0246849..276e1c2 100644
--- a/quickstep/src/com/android/quickstep/TaskOverlayFactory.java
+++ b/quickstep/src/com/android/quickstep/TaskOverlayFactory.java
@@ -23,6 +23,7 @@
 import static com.android.quickstep.views.OverviewActionsView.DISABLED_ROTATED;
 
 import android.annotation.SuppressLint;
+import android.app.ActivityManager;
 import android.content.Context;
 import android.graphics.Insets;
 import android.graphics.Matrix;
@@ -54,6 +55,7 @@
 import com.android.quickstep.views.TaskView.TaskIdAttributeContainer;
 import com.android.systemui.shared.recents.model.Task;
 import com.android.systemui.shared.recents.model.ThumbnailData;
+import com.android.systemui.shared.system.ActivityManagerWrapper;
 
 import java.util.ArrayList;
 import java.util.List;
@@ -115,8 +117,9 @@
      * Does NOT add split options in the following scenarios:
      * * The taskView to add split options is already showing split screen tasks
      * * There aren't at least 2 tasks in overview to show split options for
+     * * Device is in "Lock task mode"
      * * The taskView to show split options for is the focused task AND we haven't started
-     *   scrolling in overview (if we haven't scrolled, there's a split overview action so
+     *   scrolling in overview (if we haven't scrolled, there's a split overview action button so
      *   we don't need this menu option)
      */
     private static void addSplitOptions(List<SystemShortcut> outShortcuts,
@@ -130,7 +133,11 @@
         boolean isFocusedTask = deviceProfile.overviewShowAsGrid && taskView.isFocusedTask();
         boolean isTaskInExpectedScrollPosition =
                 recentsView.isTaskInExpectedScrollPosition(recentsView.indexOfChild(taskView));
-        if (taskViewHasMultipleTasks || notEnoughTasksToSplit ||
+        ActivityManager activityManager =
+                (ActivityManager) taskView.getContext().getSystemService(Context.ACTIVITY_SERVICE);
+        boolean isLockTaskMode = activityManager.isInLockTaskMode();
+
+        if (taskViewHasMultipleTasks || notEnoughTasksToSplit || isLockTaskMode ||
                 (isFocusedTask && isTaskInExpectedScrollPosition)) {
             return;
         }
diff --git a/src/com/android/launcher3/logging/StatsLogManager.java b/src/com/android/launcher3/logging/StatsLogManager.java
index 8b7bebc..a7cfdde 100644
--- a/src/com/android/launcher3/logging/StatsLogManager.java
+++ b/src/com/android/launcher3/logging/StatsLogManager.java
@@ -372,6 +372,9 @@
         @UiEvent(doc = "Notification dismissed by swiping right.")
         LAUNCHER_NOTIFICATION_DISMISSED(652),
 
+        @UiEvent(doc = "Current grid size is changed to 6.")
+        LAUNCHER_GRID_SIZE_6(930),
+
         @UiEvent(doc = "Current grid size is changed to 5.")
         LAUNCHER_GRID_SIZE_5(662),
 
diff --git a/src/com/android/launcher3/model/DeviceGridState.java b/src/com/android/launcher3/model/DeviceGridState.java
index fa11d4e..08c3149 100644
--- a/src/com/android/launcher3/model/DeviceGridState.java
+++ b/src/com/android/launcher3/model/DeviceGridState.java
@@ -22,6 +22,7 @@
 import static com.android.launcher3.logging.StatsLogManager.LauncherEvent.LAUNCHER_GRID_SIZE_3;
 import static com.android.launcher3.logging.StatsLogManager.LauncherEvent.LAUNCHER_GRID_SIZE_4;
 import static com.android.launcher3.logging.StatsLogManager.LauncherEvent.LAUNCHER_GRID_SIZE_5;
+import static com.android.launcher3.logging.StatsLogManager.LauncherEvent.LAUNCHER_GRID_SIZE_6;
 
 import android.content.Context;
 import android.content.SharedPreferences;
@@ -84,6 +85,8 @@
     public LauncherEvent getWorkspaceSizeEvent() {
         if (!TextUtils.isEmpty(mGridSizeString)) {
             switch (mGridSizeString.charAt(0)) {
+                case '6':
+                    return LAUNCHER_GRID_SIZE_6;
                 case '5':
                     return LAUNCHER_GRID_SIZE_5;
                 case '4':