The Spotify player control notification randomly pops-up on my Android phone. This happens when not playing any music on any device. This only seems to happen when Spotify on my PC is active. This is pretty annoying because my ambient display lights up my phone.
When I swipe away the notification, it appears again about 5 minutes later.
I'm using a Oneplus 5T now, but I have seen it happen on my previous Oneplus 2 too.