http://bugs.winehq.org/show_bug.cgi?id=13683
--- Comment #17 from Christopher Thielen christopher@thielen.co --- I can do the Windows 7 with Aero enabled-test if absolutely necessary but do not readily have access to Windows 7. I think it is a safe bet that it _does_ work as gog.com is actively selling this game and cites it as being compatible with "Windows XP, Vista, 7, and 8" (http://www.gog.com/game/ultima_9_ascension).
To test the overlay theory, is the problem that Wine does not support DirectX 7-style overlays or that Wine merely does not report the flags correctly?