https://bugs.winehq.org/show_bug.cgi?id=49109
--- Comment #2 from Henri Verbeet hverbeet@gmail.com --- It's not entirely impossible that simply changing the code exposed a bug elsewhere, but the commit in question should have no effect unless you explicitly enable the wined3d Vulkan backend. (In which case currently much more would be broken.) Is there any chance that the bug is not 100% reproducible, and the actual regression was introduced by an earlier commit?