https://bugs.winehq.org/show_bug.cgi?id=43775
--- Comment #20 from Dox IngeniousDox@gmail.com --- DX9 and 32 bit support ending, and will stop working in the coming months:
https://us.battle.net/forums/en/heroes/topic/20762156720
Making a DX11 fix slightly more important. Since not everyone can have Staging 2.15 around just for HotS.