[BUG] GLX extension not found

[milen-prg]

I installed with your app Ubuntu xfce4. Other things works (?), but can't start any browser (want GL support, snapd not working, etc.) and for example at try to run the simple graphics library RayLib in Python, it returns GLX extension not found.

The native Termux xcfce4 VNC works with raylib, also the proot Ubuntu from Andronix, so I know it is principality possible.
What magic must be used is your Ubuntu xfce4 in particular!?