http://bugs.winehq.org/show_bug.cgi?id=13603
--- Comment #8 from Stephen Mills smills15@cox.net 2009-09-17 22:13:40 --- I just discovered that this bug depends on the screen resolution. The game works normally for me when the resolution is set to 1280x1024 (my max). Note that the in-game settings menu will change the campaign map resolution, but the battle map resolution can be changed as well by editing the preferences.txt file in your installation directory.