http://bugs.winehq.org/show_bug.cgi?id=12127
--- Comment #10 from Alexandre Julliard julliard@winehq.org 2008-04-22 09:24:45 --- (In reply to comment #9)
Thanks, do we also need to file a bug with metacity?
Well, the spec doesn't say anything on this point, so it's probably considered an allowed behavior. The whole window type thing is very badly specified I'm afraid.