--- old/src/macosx/classes/sun/lwawt/LWWindowPeer.java	2013-01-09 16:45:58.225768200 +0400
+++ new/src/macosx/classes/sun/lwawt/LWWindowPeer.java	2013-01-09 16:45:58.065759100 +0400
@@ -999,27 +999,23 @@
         }
     }
 
-    /*
-     * Request the window insets from the delegate and compares it
-     * with the current one. This method is mostly called by the
-     * delegate, e.g. when the window state is changed and insets
-     * should be recalculated.
-     *
+    /**
+     * Request the window insets from the delegate and compares it with the
+     * current one. This method is mostly called by the delegate, e.g. when the
+     * window state is changed and insets should be recalculated.
+     * <p/>
      * This method may be called on the toolkit thread.
      */
-    public boolean updateInsets(Insets newInsets) {
-        boolean changed = false;
+    public final void updateInsets(final Insets newInsets) {
         synchronized (getStateLock()) {
-            changed = (insets.equals(newInsets));
+            if (insets.equals(newInsets)) {
+                return;
+            }
             insets = newInsets;
         }
-
-        if (changed) {
-            replaceSurfaceData();
-            repaintPeer();
-        }
-
-        return changed;
+        postEvent(new ComponentEvent(getTarget(),
+                                     ComponentEvent.COMPONENT_RESIZED));
+        repaintPeer();
     }
 
     public static LWWindowPeer getWindowUnderCursor() {