src/macosx/classes/sun/lwawt/macosx/CPlatformWindow.java

*** 1036,1045 ****
--- 1036,1048 ----
      private void windowWillEnterFullScreen() {
          isFullScreenAnimationOn = true;
      }
  
      private void windowDidEnterFullScreen() {
+         if (LWWindowPeer.getWindowUnderCursor() != this.peer) {
+             nativeSynthesizeMouseEnteredExitedEvents();
+         }
          isFullScreenAnimationOn = false;
      }
  
      private void windowWillExitFullScreen() {
          isFullScreenAnimationOn = true;