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

*** 749,767 ****
--- 749,776 ----
              (modalityType == Dialog.ModalityType.APPLICATION_MODAL) ||
              (modalityType == Dialog.ModalityType.TOOLKIT_MODAL);
      }
  
      @Override
+     public boolean isWindowShapingSupported() {
+         return true;
+     }
+ 
+     @Override
      public boolean isWindowTranslucencySupported() {
          return true;
      }
  
      @Override
      public boolean isTranslucencyCapable(GraphicsConfiguration gc) {
          return true;
      }
  
+     public boolean isSwingBackbufferTranslucencySupported() {
+         return true;
+     }
+ 
      @Override
      public boolean enableInputMethodsForTextComponent() {
          return true;
      }
  }