https://bugs.winehq.org/show_bug.cgi?id=40128
--- Comment #3 from Dmitry Timoshkov dmitry@baikal.ru --- (In reply to Sergey Isakov from comment #2)
Invalid? Did you see the difference between "||" and "&&"?
The patch subject "wined3d: Silence repeated 'Unhandled blend factor 0' messages." implies that this is intended behaviour.