Compatibility Report

• Name of the game with compatibility issues: Cat Goes Fishing
• Steam AppID of the game: 343780

System Information

• GPU: Radeon RX 550
• Video driver version: Mesa 25.1.3
• Kernel version: 6.15.1-0-generic
• Link to full system information report as Gist: I'll upload when necessary.
• Proton version: 10.0-1 Beta

I confirm:

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

I will upload logs when necessary. Happens on all my PCs.

Symptoms

The window bar's button symbols (e.g., _ [] x) are invisible when not clicked.

Reproduction

Run this or another game which has windowed mode.