Zhiyi Zhang zzhang@codeweavers.com writes:
There is no guarantees in Wine to make sure the rectangles passed to Xlib calls fit the requirement of using YXBanded. See 'man 3 XSetClipRectangles' for details of YXBanded.
GDI regions are supposed to be YXBanded. If there's a place where that's not true it's a bug.