When I play a song, the Spotify icon doesn't show up in the notifications bar, and the player widget doesn't show up in the notifications tray or on the lock screen. This issue means that I have to switch back to the Spotify app in order to play/pause/change tracks.
Also, if I'm playing music in Spotify, and then open another app that plays video/music, the music coming from Spotify doesn't pause. It's as if the OS is completely unaware of the fact that Spotify is running.
I've also tested playing music using the Google Music and SoundCloud apps, and neither of these are exhibiting the same problems - it seems like the issue is down to the Spotify app and not the operating system.
Thanks for bearing with us!
This should be fixed. If you haven't already, please try performing a clean reinstall of the app on your Android devices by following the steps here.
If you're on a version newer than 8.4.72 and the issue persists, we'd recommend starting a new thread on our Help Boards.