Fails to see new pairings and displays the same 4 existing paired devices

I've upgraded to the C8. now whenever I try to add a new zigbee device, it fails to see it and starts to list 4 devices that are already paired (a set of 4 lights )
any tips?

I have seen this before where they get stuck in some sort of queue/stack.
A shutdown and reboot always fixed it.
Backup first and pull the power for a minute before reboot to kill the radios.