I had several problems with bluetooth after the 8.0 update on my Pixel XL. No audio streaming to the head unit in my car, which was partially solved after the September and then the October security updates, and no notifications from my Fitbit Charge 2 after the October update. Just got my Pixel 2 XL and the same original audio problems are there - absolutely no audio streaming in the car with any app (Spotify, YouTube, etc.) AND voice input over bluetooth no longer works. On the other hand, I have Fitbit notifications back. Ugh.
Btw, the phone says it's still on the September security update and that it is up to date.
Btw, the phone says it's still on the September security update and that it is up to date.