http://bugs.winehq.org/show_bug.cgi?id=30314
--- Comment #5 from Henri Verbeet hverbeet@gmail.com 2012-04-02 15:03:05 CDT --- (In reply to comment #3)
But bug 29907 mentions "The regression started in wine-1.4-rc1", while for this bug, it occurred between 1.3.31 and 1.3.32
I don't think it's really a regression as such. It's possible that those commits change what blitter ends up being used for blitting to the screen (e.g. flush_to_framebuffer_drawpixels() vs. surface_blt_fbo()), and perhaps one of those doesn't handle the resized window properly. I may be able to fix something there, but the fundamental issue is that the window gets resized incorrectly by the window manager for some reason.