Comment # 4 on bug 1194645 from Alexandre Vicenzi

This behavior is expected and running the command currently warns about it:

WARN[0000] The cgroupv2 manager is set to systemd but there is no systemd user
session available 
WARN[0000] For using systemd, you may need to log in using a user session 
WARN[0000] Alternatively, you can enable lingering with: `loginctl
enable-linger 1001` (possibly as root) 
WARN[0000] Falling back to --cgroup-manager=cgroupfs

There's a KB [1] about this behavior, and the solution is to log in directly as
the user (as Fabian suggested), or alternatively execute loginctl (as Dan
suggested).

[1]: https://www.suse.com/support/kb/doc/?id=000021071