Z-wave JS UI - new devices won't propagate to MQTT

I am using the very nice addon Z-wave JS UI together with MQTT on my HASS installation (Raspberry Pi 4). I have had no problem to get my existing devices into Z-wave JS UI, and adding new devices work equally well. However, after adding a new device, it won’t show up in MQTT despite numerous restarts, reboots and reloading MQTT. The newest device just won’t show up despite being reported as fully functional in Z-wave JS UI.

What do I need to do to get all Z-wave devices included in MQTT?