https://bugs.winehq.org/show_bug.cgi?id=53716
--- Comment #1 from Jacek Caban jacek@codeweavers.com --- The problematic syscall is NtUserRedrawWindow. The problem is that it causes a WM_PAINT message, the application crashes while processing it and the crash gets ignored. Prior to this commit, the crash also happened, but was propagated to application code and handled there.