Merge "Reset original task surface after reparenting to PiP" into tm-qpr-dev

services/core/java/com/android/server/wm/RootWindowContainer.java

@@ -2048,6 +2048,9 @@ class RootWindowContainer extends WindowContainer<DisplayContent>
                             task.mLastRecentsAnimationTransaction,
                             task.mLastRecentsAnimationOverlay);
                     task.clearLastRecentsAnimationTransaction(false /* forceRemoveOverlay */);
+                } else {
+                    // Reset the original task surface
+                    task.resetSurfaceControlTransforms();
                 }
 
                 // The organized TaskFragment is becoming empty because this activity is reparented

services/core/java/com/android/server/wm/Task.java

@@ -5975,8 +5975,13 @@ class Task extends TaskFragment {
         mLastRecentsAnimationTransaction = null;
         mLastRecentsAnimationOverlay = null;
         // reset also the crop and transform introduced by mLastRecentsAnimationTransaction
-        getPendingTransaction().setMatrix(mSurfaceControl, Matrix.IDENTITY_MATRIX, new float[9])
+        resetSurfaceControlTransforms();
+    }
+
+    void resetSurfaceControlTransforms() {
+        getSyncTransaction().setMatrix(mSurfaceControl, Matrix.IDENTITY_MATRIX, new float[9])
                 .setWindowCrop(mSurfaceControl, null)
+                .setShadowRadius(mSurfaceControl, 0)
                 .setCornerRadius(mSurfaceControl, 0);
     }