The only input accepted is using the mouse to select the type (node or pv/s) or clicking the cancel or OK button in the popup window but at this point no new content has been entered so nothing may be added to the tree.
I am accessing the system though vnc and see no other issues except for one that may be related. If I make a change in display builder
and exit without having already saved the change, I get a popup which allows me to save or discard changes but something has performed a keyboard and mouse grab and I have to kill the vnc session from a terminal to recover.
Distributor ID: Ubuntu
Description: Ubuntu 22.04.2 LTS
Release: 22.04
Codename: jammy