http://bugs.winehq.org/show_bug.cgi?id=13718
--- Comment #8 from handsomepete jeff.mitchell+WINE@gmail.com 2008-09-20 16:53:39 --- I'm still testing, but this may have been permanently resolved by the work on SetLayeredWindowAttributes (or something else, I'm just guessing) in 1.1.5. Can anyone else confirm? So far so good for me.