Have there been any updates for this issue? Based on prior posts it seemed like there was a trail being followed regarding keepalive events or power reports, but I haven't seen a "yup, this is all fixed now!" type message.
I seem to be having the same issues as described above, so I'll add some more data points to the discussion. I added a bunch of Inovelli light/fan switches to a pre-existing Zigbee network a few months ago. They worked fine for a couple weeks until I made the rookie mistake of saying that my zigbee network was super stable after my dad lamented the issues he was having with his HASS setup. I swear I know better..... When my Inovelli devices are unresponsive, the other zigbee devices on the mesh all seem to function properly and automations continue to work, except for those that depend explicitly on the Inovelli devices.
This network is connected to a Hubitat C5 unit, running various software revisions over the few months since these switches were installed, currently running software version 2.3.8.140. I think I've used the same Inovelli drivers for the wall switches since I set things up, but I did use a few separate driver versions of the canopy fan switch.
28 VZM31-SN 2-in-1 switches
2 VZM35 Fan switches
2 VZM36 Canopy switches
a litany of smartthings/aeotec buttons, contact sensors, motion sensors, and wetness sensors.
My whole house was "power cycled" three nights ago due to a neighborhood wide power outage, so my whole setup was offline for approximately three hours. I've had to do a few bulk resets of switches by tripping the main house breaker since then to get things working. The Hubitat unit is on a UPS, so it's only the switches that are cycling. I haven't noticed any specific cadence/period to when things stop functioning properly.
I can air-gap the wall switches pretty easily, but disconnecting the canopy units in the ceiling fans is less than trivial and would likely require taking apart both fans controlled by them, so I'm not too keen on doing that unless necessary.
I have a C7 unit available without any Zigbee devices connected to it, so it could serve as a good way to isolate devices for testing. I don't have a sniffer but acquiring one shouldn't be a problem.
I'm hoping there have been some improvements/developments since this thread went quiet a few months ago. I currently have copious amounts of free time, so I should be able to lend a fair amount of time to troubleshooting efforts if it is helpful.
Any help would be appreciated!