http://bugs.winehq.org/show_bug.cgi?id=23059
--- Comment #12 from Dmitry Timoshkov dmitry@codeweavers.com 2010-06-08 08:04:10 --- (In reply to comment #11)
Hmmm... I always thought, that setting Win version only changes reported Windows for application, but all the dll/funtions remains the same for all the versions. Apparently not.
Apparently an application could choose a different code path when it detects so different Windows platforms.