It’s mostly the problems with anti cheats. The one that comes to mind is Helldivers. I already hated the anti cheat for that game but it’s impossible on Linux. If I was still into Apex Legends I’m sure Easy Anti Cheat would cause some issues but I’m not sure. If Easy Anti Cheat doesn’t work then there are a lot of games to add to that list like Halo and The Finals. I can’t name a lot off the top of my head but Easy Anti Cheat is super popular with devs of online games.
Helldivers 2. It kept crashing so I figured it was because of the anti cheat. Perhaps it was just user error and I need to try again.