src/java.desktop/windows/classes/sun/awt/windows/WLightweightFramePeer.java

*** 103,108 ****
--- 103,114 ----
  
      @Override
      public void removeDropTarget(DropTarget dt) {
          getLwTarget().removeDropTarget(dt);
      }
+ 
+     @Override
+     public void setBounds(int x, int y, int width, int height, int op) {
+         super.setBounds(x, y, width, height, op);
+         paintPending = false;
+     }
  }