http://bugs.winehq.org/show_bug.cgi?id=18386
--- Comment #9 from Dmitry Timoshkov dmitry@codeweavers.com 2010-07-09 04:49:09 --- (In reply to comment #8)
I'm not sure it's a complete duplicate - bug 10841 is about Wine not restoring the resolution when an app loses focus, here it's about Wine not restoring the resolution when the app ends and wineserver terminates. So the base cause might be the same (Wine ain't notified when the app terminates), but the solution may be easier: on wineserver end, restore last known good desktop resolution.
Despite its summary the bug 10841 in the comments also mentions applications that don't restore screen resolution on exit.