Merge "Do not wait for window with alpha=0" into udc-dev

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

@@ -5647,7 +5647,7 @@ class WindowState extends WindowContainer<WindowState> implements WindowManagerP
 
     @Override
     boolean isSyncFinished() {
-        if (!isVisibleRequested()) {
+        if (!isVisibleRequested() || isFullyTransparent()) {
             // Don't wait for invisible windows. However, we don't alter the state in case the
             // window becomes visible while the sync group is still active.
             return true;