Sometimes when I open the menu, my keyboard freezes, softlocking the app. This problem is the first mentioned here https://github.com/sezero/uhexen2/blob/master/docs/BUGS. I would be really glad if someone could instruct me on how to fix it exactly. I'm running Ubuntu 18.04.4 LTS, and it says the uhexen2 version is 1.5.8+dfsg-1. The version of libsdl1.2debian is "1.2.15+dfsg2-0.1ubuntu0.1"