The fingerprint reader works fine on Oreo stable, but one behaviour is extremely annoying. When 6 or more times the fingerprint fails reading the finger, the screen turns on to tell you.
In particular, I have problems when I have my phone in the pocket of my pants and bike to work. Due to sweat the phone thinks I want to unlock my phone, turns on the screen after a while and activates controls(pause, play, skip, etc.) of Spotify and/or audible app.
Nougat recognised failed fingerprint readings, but did not turn the screen on, which is much better in my eyes.
Please fix it with next release.