I noticed devices werent turning on and off by automations anymore, so I tried turning things off by voice assist and whilst she claimed she was turning off switches, she was not.
Logging into homeassistant I saw this update pending, and all zigbee devices were no longer detected.
That seems like the exact opposite behaviour of an update check, the update isn’t even self installing.
Installing the update and restarting home assistant fixed things, but if my whole smarthome is going to die every time there’s an update found I’m going to have to stop relying on it.