src/java.desktop/share/classes/java/awt/Component.java

*** 10216,10226 ****
          }
  
          applyCompoundShape(getAppliedShape().getDifference(s));
      }
  
!     private final void applyCurrentShapeBelowMe() {
          checkTreeLock();
          Container parent = getContainer();
          if (parent != null && parent.isShowing()) {
              // First, reapply shapes of my siblings
              parent.recursiveApplyCurrentShape(getSiblingIndexBelow());
--- 10216,10226 ----
          }
  
          applyCompoundShape(getAppliedShape().getDifference(s));
      }
  
!     private void applyCurrentShapeBelowMe() {
          checkTreeLock();
          Container parent = getContainer();
          if (parent != null && parent.isShowing()) {
              // First, reapply shapes of my siblings
              parent.recursiveApplyCurrentShape(getSiblingIndexBelow());