When using the Pixel Stand by Google (wireless charging stand) while playing music, the screen will take over with a larger display of the music notification and give you some handy controls to use. This works when I play through Google Play Music and Spotify, but when playing through Sonos it displays fine… but the controls don’t work. Play, Pause, Next, Previous. They don’t do anything.
Seems like a bug with the Android app, but I didn’t see a way to report it so I’m posting about it here.