http://bugs.winehq.org/show_bug.cgi?id=29397
--- Comment #3 from Jeff Cook jeff@deserettechnology.com 2012-04-15 13:03:00 CDT --- (In reply to comment #2)
Can confirm I saw the black boxes as well in wine 1.5.1.
For me I only really noticed them on the arrows being fired by archers, the models of units seemed fine. Even then it wasnt all the time and mostly seemed to be if you were viewing it while the arrow was traveling away from you. Doesn't affect the game in anyway, only a very mild annoyance when very busy.
Indeed. The widely noticeable flickering on backgrounds and models was fixed late in the 1.4 RC cycle. There are still occasional black boxes on things like arrows, but it is much, much less disruptive now.