http://bugs.winehq.org/show_bug.cgi?id=22684
--- Comment #9 from Wylda wylda@volny.cz 2010-05-17 16:10:48 --- (In reply to comment #8)
I now know when it goes wrong. It seems to happen when RealizePalette is called for the front buffer.
Perfect :) I'm waiting for some patch ;)