--- old/src/share/classes/javax/swing/PopupFactory.java	2012-06-06 14:52:06.406250000 +0400
+++ new/src/share/classes/javax/swing/PopupFactory.java	2012-06-06 14:52:05.487304700 +0400
@@ -203,12 +203,6 @@
                     popupType = HEAVY_WEIGHT_POPUP;
                     break;
                 }
-            } else if (c instanceof Window) {
-                Window w = (Window) c;
-                if (!w.isOpaque() || w.getOpacity() < 1 || w.getShape() != null) {
-                    popupType = HEAVY_WEIGHT_POPUP;
-                    break;
-                }
             }
             c = c.getParent();
         }