http://bugs.winehq.org/show_bug.cgi?id=14946
--- Comment #14 from Stefan Dösinger stefandoesinger@gmx.at 2008-08-24 01:19:12 --- I think I found it. The This->d3d_window move caused the swapchain destroying code to destroy the application-owned window accidentally. I'll look at this tomorrow and after my wine tree recompiled.