Yes,
You can visualize the behavior tree in realtime while playing in editor.
One question, Is you player inside the navmesh with all NPCs? All actors need to be inside the navmesh volume on begin playing in editor. You can also add print strings in all functions you want to debug to check if those nodes are triggering.
Another topic that you can try is replace the node GetRandonPointinNavigableRadius by other options:
