https://bugs.winehq.org/show_bug.cgi?id=41566
--- Comment #2 from katsunori.kumatani@gmail.com --- Yes, I tested with wine 2.2 and wine-staging 2.2, still same thing happens.
I will try test the latest wine tomorrow since I don't have time right now, but I'm not sure if there will be any improvement (since the app is OpenGL based, not Direct3D, so most of the recent additions/bugfixes to D3D probably won't have much impact). I will report then.
Either way thanks for trying to look into it.