I had a similar issue (perhaps) at a client site.
The issue was that a critical repeater (which was close to the Hub had failed.
I found out about that device, by using the Hubitat Zwave Mesh Details app from Tony:
- Install the Z-wave mesh tool [BETA] A Z-Wave Mesh Tool [C7 and 2.2.4+ Only] from Hubitat Package Manager and use the Mesh tool to identify the neighbor nodes that the ghost devices are hanging onto. Use the
expand arrow in to expand the ghost device row in the Mesh Details app to see the device's neighbors. See the "Neighbors" column in the example screen cap below:
(that was from @danabw )
