http://bugs.winehq.org/show_bug.cgi?id=30967
--- Comment #11 from sworddragon2@aol.com 2012-06-21 13:22:20 CDT --- I have tested this with a few other games. On Guild Wars the resolution is instantly set back to 1680x1050 if I try to change it. Warcraft 3 has the same problem as Diablo 3 except that after a restart of the game the resolution is set back to 1680x1050.
But this are all games under Wine which are making troubles. I have tested this even with native Linux games (Amnesia: The Dark Descent; Teeworlds) and they are working fine if I set the resolution to 800x600.