http://bugs.winehq.org/show_bug.cgi?id=18016
--- Comment #8 from quasi-anonymous user from bugmenot.com winehqbugs@bugmenot.com 2009-04-13 11:30:25 --- With help from kgbricola in IRC I managed to track down the culprit:
This version does have the bug: http://source.winehq.org/git/wine.git/?a=commitdiff;h=a47e7badb9484b123be413...
This version (its parent) does work: http://source.winehq.org/git/wine.git/?a=commitdiff;h=474e7ed98c23348ac227c0...
I will now check if the demo has the same bug.