Using the official Proton (I tested with Proton 9.0-4) makes the game throw error messages during almost every interaction. Switching to Proton GE resolves the issue.

The game works perfectly: gameplay is smooth, and there don’t appear to be any errors with dialogue (both text and audio). Recollection Lobbies display correctly, and interactions work just fine.

Social features also seem to be working as expected, and the “Notice” window loads without a problem. I logged into the forum through it and read a few posts just to test.