https://bugs.winehq.org/show_bug.cgi?id=40766
--- Comment #4 from david.dljunk@gmail.com --- (In reply to Ken Thomases from comment #3)
The driver (X11 or Mac) is not involved in codecs at all.
The most likely potential causes are either a z-order problem or an issue with a cross-process window hierarchy.
Interesting, that would actually make more sense. In another game, Red Baron 3D, during the opening company logo, I can see a small white square which is pretty obviously the buried window for the cutscene coming up next. And in the multiplayer Red Baron 3D window in the Mac driver, which comes up as a window by default, the window doesn't update unless I click out of wine and back in or move it around - until that is I play a mission or if I have the cutscene play before going into the multiplayer window. I'm not sure if these are all related to each other, but they sound like they could be. Which part of the code would I go into to test this and play around with things?