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

*** 855,865 ****
          }
      }
  
      private void flushBuffers() {
          if (isVisible() && !nativeBounds.isEmpty()) {
!             LWCToolkit.getLWCToolkit().flushPendingEventsOnAppkit(target);
          }
      }
  
      /*************************************************************
       * Callbacks from the AWTWindow and AWTView objc classes.
--- 855,875 ----
          }
      }
  
      private void flushBuffers() {
          if (isVisible() && !nativeBounds.isEmpty()) {
!             try {
!                 //Post an empty runnable to the eventQueue and wait for it to finish,
!                 //Selectors continue to be processed on the Appkit Thread
!                 LWCToolkit.invokeAndWait(new Runnable() {
!                     @Override
!                     public void run() {
!                     }
!                 }, target);
!             } catch (Exception e) {
!                 e.printStackTrace();
!             }
          }
      }
  
      /*************************************************************
       * Callbacks from the AWTWindow and AWTView objc classes.