Is it normal to get zbjoin events from existing devices?

i’ve never paid much attention to my events list. i was checking up on my z-wave restarting and notice these zbjoin events. I haven’t added any zigbee devices lately. Is this normal?

You will see those events anytime a zigbee device joins or rejoins the network. Some devices will only rejoin the network if their parent disappears (ex: because it was powered off) and other devices will rejoin more frequently than that. It’s not a problem unless the same device is rejoining over and over. In that case I’d recommend a factory reset of the device which will hopefully fix the problem.