http://java.net/jira/browse/MACOSX_PORT-257 submitted 2011/08/10 by Yuri Nesterenko
Run an attached small example. It starts an application and adds a Menu with two MenuItems. Initially they have no shortcuts. Press the Button. Action will successfully setShortcut() to both items. Press the button again: now it should remove shortcuts using different ways for both items, calling setShortcut(null) and calling deleteShortcut(). Neither has any effect in macosx port.