If you’ve got the Alexa integration installed then the latest update causes the reboot. You might be able to disable it as it’s coming up and then downgrade it to one that works

That’s the most confusing load of bollocks I’ve read in a long time.

Thanks for all the input. It seems that since everything is working fine for me I should just keep using ZHA. Maybe when I have plenty of free time I’ll migrate to get the extra features but it’s not something that I’ve missed.