KH is annoying, what's REALLY annoying is its not the GAME that doesn't work well with proton. It's the DRM and the launchers. You can get the Epic store versio

KH is annoying, what's REALLY annoying is its not the GAME that doesn't work well with proton. It's the DRM and the launchers. You can get the Epic store versions to work but it is a bit fiddly. For KH 1.5+ 2.5 you have bypass the launcher and go to the eye directly.