Cannot Edit CT in GUI

I cannot edit either options or resources for a container in 3.1.

Is this because I have two nodes in a cluster? Or because I have them stored on NFS?

Or did I just break it somehow? I see that permissions are owner root and group is the web server. I thought I should give www-data write perms on the /mnt/pve but it errors with function not implemented, which I assume is because of the cluster.