Disgaea 4 Complete+ (1233880)

Compatibility Report

• Name of the game with compatibility issues: Disgaea 4 Complete+. Linux
• Steam AppID of the game: 1233880

System Information

• GPU: Intel Corporation UHD Graphics 620 (rev 07)
• Proton version: 6.3-6 and Experimental

Operating System Version:
Ubuntu 21.04 (64 bit)
Kernel Name: Linux
Kernel Version: 5.11.0-35-generic
X Server Vendor: The X.Org Foundation
X Server Release: 12011000
X Window Manager: KWin
Steam Runtime Version: steam-runtime_0.20210906.1
Video Card:
Driver: Intel Mesa Intel(R) UHD Graphics 620 (KBL GT2)
Driver Version: 4.6 (Compatibility Profile) Mesa 21.0.3
OpenGL Version: 4.6

I confirm:

• that I haven't found an existing compatibility report for this game.
• that I have checked whether there are updates for my system available.

Symptoms

After the new update of Experimental, can not pass the cinema, even if I push many times: k or l. This was the trick to play on recent releases.
Now I can not play on 6.3-6 or Experimental.

Reproduction

I think is the new update of Experimental.
steam-1233880.log

Start with the attached steam-1233880.log and compare behavior on Proton 6.3-6 and Experimental under Ubuntu 21.04. Reproduce the cinema input failure using the reported system and launch configuration; done means identifying whether the Experimental update causes the regression and documenting or resolving the compatibility issue.