The current latest version (Version 7 - Apr 26, 2022) fails to start on Fedora Silverblue (and maybe other distros too, I didn’t check). The game launches, the FMOD logo fades in and out, but the title screen doesn’t load.
The issue is caused by the libfmodstudio.so library, which can be found in:
Patrick's Parabox/Patrick's Parabox_Data/Plugins
Open that directory in the terminal, install execstack if you don’t have it already, and run:
execstack -c libfmodstudio.so
This fixes the library and the game starts with no issue from there.