http://bugs.winehq.org/show_bug.cgi?id=27524
--- Comment #12 from Alberto Marchesini alberto.marchesini@gmail.com 2011-06-25 11:09:03 CDT --- (In reply to comment #11)
Oh, and I think this regressions is supposed to be fixed with current git.
I'm in the same (Christofer's) situation: without backbuffer I cannot play with Left4Dead.
Anyway current git works for me.
Bug closed I guess.