https://bugs.winehq.org/show_bug.cgi?id=44315
--- Comment #19 from mirh mirh@protonmail.ch --- https://github.com/acomminos/wine-pba/issues/11#issuecomment-377791207 As I reported here, mesa (or gallium? Or just amd driver? Not sure) is highly bugged w/ ARB_buffer_storage.
That exact issue calling the total opposite result than OP being quite an evident proof.