http://bugs.winehq.org/show_bug.cgi?id=26277
--- Comment #2 from Zdenek Behan rain@matfyz.cz 2011-03-01 22:36:07 CST --- Attached is the relevant part of revert of 7e3985e1fea60da73bae2b9465b94e5d110909fc
This fixes the problem for me. In the original commit, the removal of this is dubious and unexplained, so I can only guess what the original code does. In practice, it has nothing to do with fullscreen or not, the application runs identically regardless of being in a virtual desktop, or freely, it goes fullscreen right after start anyway. The only difference this makes is receiving mouse clicks.
Maybe it's not a perfect solution, but it works for me.