BID was made with unity 2022 so.. yes , it is a different version than my older games.
But as far as i know , it should work (at least no one else reported this bug who played on linux) So... no idea actually since i can not test it myself >_>
Ok. Thx for your answer.
Easy, not best, way to test your Linux builds. Linux Live Boot via USB stick.
https://linuxmint-installation-guide.readthedocs.io/en/latest/
Runs only from USB Drive. Does nothing to your Windows HD.