http://bugs.winehq.org/show_bug.cgi?id=20865
--- Comment #37 from Austin Lund austin.lund@gmail.com 2010-06-24 18:02:33 --- (In reply to comment #36)
sync_window_position is not called when event_type == ConfigureNotify, dlls/winex11.drv/window.c around line 2338.
Hmm... OK. Then my test program perhaps does not recreate the problem. I'll have to look closer at what steam is doing.