Ultrakill does not accept mouse or joystick inputs

[coatlessali]

Using the Linux porting guide, I successfully am running ULTRAKILL on Linux natively with no major issues. When attempting to use libTAS, the game does not respond to mouse inputs. Trying to use a joystick results in the game detecting one (as indicated by the highlight on the main menu), but not actually doing anything. Running on Arch Linux, libTAS compiled from source.

[coatlessali]

Update: I have forcibly loaded cybergrind by renaming level2 to level0, and keyboard inputs do not work either. The only inputs that function are pressing escape on the splash screen to skip it.