I am also using 20.04 and experiencing what may be the same crash: (see attachment for more)
... trying pak6-patch088/ui Loading DLL file /usr/lib/openarena/baseoa/pak6-patch088/uix86_64.so instead. Loading DLL file: /usr/lib/openarena/baseoa/pak6-patch088/uix86_64.so Sys_LoadGameDll(/usr/lib/openarena/baseoa/pak6-patch088/uix86_64.so) failed: "Failed loading /usr/lib/openarena/baseoa/pak6-patch088/uix86_64.so: /usr/lib/openarena/baseoa/pak6-patch088/uix86_64.so: undefined symbol: __atan2_finite" Failed to load DLL /usr/lib/openarena/baseoa/pak6-patch088/uix86_64.so. ----- Client Shutdown (Client fatal crashed: VM_Create on UI failed) -----
I am also using 20.04 and experiencing what may be the same crash: (see attachment for more)
... trying pak6-patch088/ui openarena/ baseoa/ pak6-patch088/ uix86_64. so instead. openarena/ baseoa/ pak6-patch088/ uix86_64. so (/usr/lib/ openarena/ baseoa/ pak6-patch088/ uix86_64. so) failed: openarena/ baseoa/ pak6-patch088/ uix86_64. so: /usr/lib/ openarena/ baseoa/ pak6-patch088/ uix86_64. so: undefined symbol: __atan2_finite" openarena/ baseoa/ pak6-patch088/ uix86_64. so.
Loading DLL file /usr/lib/
Loading DLL file: /usr/lib/
Sys_LoadGameDll
"Failed loading /usr/lib/
Failed to load DLL /usr/lib/
----- Client Shutdown (Client fatal crashed: VM_Create on UI failed) -----