All Zigbee devices stop responding

I am running Self hosted homey and all appears working but about every 3 to 4 weeks suddenly all the Zigbee devices stop responding, reboot and they all work again for about 3 weeks then stop again, anyone else seen this behaviour? One other point when I reboot I have to repair my alexas

Peter

Does only rebooting the Bridge also fix the issue?

That I haven’t tried, I will next time.