https://bugs.winehq.org/show_bug.cgi?id=43239
--- Comment #6 from Jonathan Strander mblackwell1024@gmail.com --- (In reply to scix from comment #5)
(In reply to Jonathan Strander from comment #3)
Vague thought is it is related to a similar issue I saw a screenshot of where it appears some shaders "glitch out". Perhaps not but I sometimes see objects including surfaces like the ground manifest as dark and switching around some graphical options seems to fix it until a new area is streamed in.
I have that bug as well (perhaps Nvidia specific going by Shmerl's experience), but it doesn't affect the ground being dark issue.
That is too bad. Killing two birds with one stone would be nice!