--- old/src/java.desktop/windows/classes/sun/awt/windows/WCanvasPeer.java	2018-11-28 16:23:31.000000000 -0800
+++ new/src/java.desktop/windows/classes/sun/awt/windows/WCanvasPeer.java	2018-11-28 16:23:31.000000000 -0800
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1996, 2014, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1996, 2018, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -69,8 +69,7 @@
     @Override
     public void paint(Graphics g) {
         Dimension d = ((Component)target).getSize();
-        if (g instanceof Graphics2D ||
-            g instanceof sun.awt.Graphics2Delegate) {
+        if (g instanceof Graphics2D) {
             // background color is setup correctly, so just use clearRect
             g.clearRect(0, 0, d.width, d.height);
         } else {