[Bug 35491] Switching to fullscreen works inconsistently

http://bugs.winehq.org/show_bug.cgi?id=35491

--- Comment #5 from Christopher Thielen  ---
Some more information about this bug:

Wine always switches video resolution correctly, it just doesn't seem to handle
placing the viewport in the correct spot (again, whether the WM is
managing/decorating windows or not).

What typically happens is that the WM creates a window but does not place it on
top of other windows, and alt-tabbing to that window after the resolution has
changed sometimes causes the viewport to be in the wrong place.

Note: I am using SDL 1.2's "testgl -fullscreen" program (comes with the SDL
source code) to verify that my video driver does switch to fullscreen mode and
back correctly.