--- old/jdk/src/java.desktop/share/classes/javax/swing/JRootPane.java	2017-01-27 10:19:45.698540179 -0800
+++ new/jdk/src/java.desktop/share/classes/javax/swing/JRootPane.java	2017-01-27 10:19:45.570540179 -0800
@@ -663,8 +663,7 @@
             throw new NullPointerException("glassPane cannot be set to null.");
         }
 
-        AWTAccessor.getComponentAccessor().setMixingCutoutShape(glass,
-                new Rectangle());
+        glass.setMixingCutoutShape(new Rectangle());
 
         boolean visible = false;
         if (glassPane != null && glassPane.getParent() == this) {