I didn't do a thorough investigation, but the in-game news/notice window doesn't work without this fix. This window also appears automatically upon first daily launch of the game, but without this fix, the screen just bl...
just wanted to point out that this fix works for Atelier Resleriana too, although the game is mostly playable without it. Game ID "2594920" https://store.steampowered.com/app/2594920/Atelier_Resleriana_Forgotten_Alchemy_...
@BaconCatBug I confirmed the issue and that adding it to the gamedrive list fixes the issue. You should see it now on Proton Experimental Bleeding Edge. I did find that if you have booted the game previously on an older ...
After digging though things and my own testing, it looks like all that needs to be done is add the id 2526380 to the ret.add("gamedrive") section in the main proton file, but I am sure you knew that already. Just posting...