Zigbee2mqtt hangup on Openhab restart

Hello Everybody,

I use zigbee2mqtt to feed data into my Openhab system. I noticed that whenever I restart the Openhab (that has a zwave adapter attached, but no zigbee stick nor binding), the zigbee2mqtt reproducibly stalls/hangs up.

The npm task is still running, but no further mqtt messages are being transmitted, not even for the bridge.
Restarting zigbee2mqtt restores operation.

I wonder if anyone else noticed this.