http://java.net/jira/browse/MACOSX_PORT-685 submitted 2011/11/10 by Yuri Nesterenko
Run the attached regression test. It puts 3 Canvases to a Frame: a middle one is drag gesture recognizer (drag source), right one is a drop target, and left one is neither. Then robot drags from the middle to the left canvas and releases mouse button. Middle canvas (drag source) does receive in dragDropEnd(event) with event.getDropSuccess() == true which is a bug.
The original bug for this regression test tests a value for success flag after a successful operation but now it doesn't go that far.