http://bugs.winehq.org/show_bug.cgi?id=20164
--- Comment #12 from Roderick Colenbrander thunderbird2k@gmail.com 2009-10-13 18:28:36 --- Hi Max,
If you suspect that this 24->1 is the issue, you could make that case fail and just return FALSE. When FALSE is returned the code reverts to the old non-xrender code path. If it works then, then you know for certain that it is related to that specific code path.
Such a test would be useful.
Roderick