So earlier today my Google nest integration stopped working. I can change the temperature thought home assistant and see the change take affect on the nest. However if I change the temp on the nest Home Assistant doesn’t show the change, until I reload the integration.
I also noticed that every time I reload the integration the logbook will instantly say it became unavailable, but on the entities page it says it available and I can still adjust the temp from HA.
This issue persisted even after I switch from the yaml config to the new way on setting up the nest integration.
Okay, I am somewhat relieved I am not the only one dealing with this. I am having the same issues. Literally did the same things you did. Tried switching from YAML to GUI config, tried restoring an old backup, etc. Nothing I can do fixes it. Also, my doorbell notifications stopped as well.
Edit: I upgraded from 2022.7.4 to 2022.7.5 this morning. Did you do the same? I don’t know if the issue was occurring before but I didn’t notice until after the upgrade.