--- old/src/macosx/classes/sun/lwawt/LWRepaintArea.java	2012-06-04 18:39:19.109640000 +0400
+++ new/src/macosx/classes/sun/lwawt/LWRepaintArea.java	2012-06-04 18:39:18.912628700 +0400
@@ -58,9 +58,6 @@
 
     private static void flushBuffers(final LWComponentPeer peer) {
         if (peer != null) {
-            if (!peer.getWindowPeerOrSelf().isOpaque()) {
-                peer.flushOffscreenGraphics();
-            }
             peer.flushOnscreenGraphics();
         }
     }