I just bought a notebook with 4k display (3840x2160). Most applications are scaling fine, except for ScummVM (or maybe I'm not smart enough

So, is there any theme or something similar which is able to handle 4k?
If not, is it worth writing a 4k Theme (with bigger buttons, texts, etc)? If yes, I would dig into the documentation and try to write one...
Any other ideas about this topic?
Kind regards and stay healthy,
Michael