Merge "Fix split-screen flash issue"

am: 6738617652

Change-Id: I5b4d32c30460f2b26fd31cc8dcf1b0b6463dbf28

packages/SystemUI/src/com/android/systemui/stackdivider/DividerView.java

@@ -1048,6 +1048,7 @@ public class DividerView extends FrameLayout implements OnTouchListener,
 
     public final void onBusEvent(RecentsActivityStartingEvent recentsActivityStartingEvent) {
         if (mGrowRecents && getWindowManagerProxy().getDockSide() == WindowManager.DOCKED_TOP
+                && getSnapAlgorithm().getMiddleTarget() != getSnapAlgorithm().getLastSplitTarget()
                 && getCurrentPosition() == getSnapAlgorithm().getLastSplitTarget().position) {
             mState.growAfterRecentsDrawn = true;
             startDragging(false /* animate */, false /* touching */);