--- old/src/macosx/classes/com/apple/laf/AquaScrollPaneUI.java	2012-02-10 23:40:22.000000000 +0400
+++ new/src/macosx/classes/com/apple/laf/AquaScrollPaneUI.java	2012-02-10 23:40:22.000000000 +0400
@@ -60,6 +60,9 @@
             if (wasVisible) {
                 vScrollBar.setVisible(true);
             }
+            // Consume the event even when the scrollBar is invisible
+            // see #7124320
+            e.consume();
         }
     }
 }