https://bugs.winehq.org/show_bug.cgi?id=55417
--- Comment #4 from François Gouget fgouget@codeweavers.com --- Unfortunately I don't have any insight into the timing of the WM_SYNCPAINT messages. I normally come in when the WineTest report lands on test.winehq.org and by then there is no record of what was happening on the screen at the time user32:msg was running (screenshots might help here but that's probably dead).