Thanks for calling this out with Steam having the same issues, Zentgraf. This is not something that we can recommend, but if you do feel comfortable with these changes, there’s some resources that our players have provided. We have seen some situations where the same TCC file has to be readjusted because it was moved some time ago.
Here’s the forum post about the TCC.db, for step 2.1, you may need to do this for ~/Library/Application\ Support/com.apple.TCC/TCC.db instead of the location on the post.
Hopefully, this helps!