Linux AppImage not playable

[Karawane]

Hi, while the providing of an AppImage for Linux users is great, it doesn't run correctly on my system. I run Ubuntu 20.04 in default configuration, the system generally works fine. The Mule AppImage starts (even with sound), but in all input boxes the text is unreadable. Still, I can manage to type password and login blindly. Navigating the menu to create a game is also possible, but then it does not react to my keystrokes, thus I cannot join or add players or start the game. Any idea or workaround?

[qwitwa]

planetmule-1.3.6_202002182011-amd64.AppImage produces the following attached log_init.txt when the appimage is extracted and run.

[karlb]

Same problem here on the current debian stable with a freshly downloaded AppImage.