Larian Studios Forums Divinity: Original Sin 2 Divinity - Original Sin 2 - Bugs & Technical Problems Definitive Edition - just crashes to black screen on Steam Deck

I somehow cannot run the Definitive Edition on Steam Deck anymore. All I get is a crash to a black screen. But a few months ago it ran just fine.

I tried to enforce all available Proton Versions (up to 8.03), verified the file integrity, tried the --skip-launcher option, tried deleting Proton files, and tried re-installing it, ... but it just won't run anymore.

It's baffling because the Proton change-log explicitly states, that the black screen bug of Divinity Original Sin 2 Definitive Edition should be fixed since Proton 8.0.2,

Does anybody have any advice for me? I'm totally clueless right now.