Thank you for your response. I unfortunately had rather negative experiences in the past on Steam with maintaining both a Linux and a Windows version.
That's why I'm currently only on Windows. If it would be possible to get it running with Proton, that would be amazing. If not, that is of course no problem. :D
Greetings
So... A bit of an update on that side (sort of). I've noticed that the Steam Overlay also didn't work after packing, as the required command line argument wasn't passed to the game's executable. Although I'm not sure if these are correlated, but it's possible that there could be a conflict.
I am working on adding the required flag automatically for the Steam builds, but until then, you can fix that (if needed) by adding the --in-process-gpu in the executable flags (found under Project Settings -> Compiler and Packer -> Halva Settings).
