[X2Go-User] snaps don't work on x2go

Hello! I'm currently testing x2go with a fresh install of Ubuntu on Proxmox. When accessing via x2go, many applications do not work, such as firefox and chromium.

When you start the terminal you get the message

/user.slice/user-1000.slice/session-401.scope is not a snap cgroup

Same under Lubuntu. I found reports of similar problems via Google, all of which point to Snap, but I don't see or understand a proper solution.

How do you use x2go with this problem?

Greeting, Olaf