This was posted to Spotify tech support. I'll post reples here but if anyone else has any bright ideas, I'd welcome them.
Nexus 6 / Android V6 / Spotify 220.127.116.119
Seeing various problems with the app recently. My colleague at work who also uses spotify on a Samsung Note 3 is having the exact same issues. Many MANY forums and reviews have also said the same thing - if you take a look at your own forums you'll see the same complaints being raised frequently, or even on the app reviews.
1 - Songs continue playing when headphones unplugged. It also pauses the song when dialing over a bluetooth hands free kit, and starts playing the song again once it finishes dialing. To replicate plug in headphones, hit play, unplug headphones. For in car, start playing and dial a person while the phone is connected to a bluetooth hands free kit.
2 - Random crashing - Spotify will randomly quit and I'll have to re-launch the App. Just start playing spotify (while streaming - not offline) and leave it playing and give it a few hours. At some point it simply quits.
3 - Keeps playing but is removed from the lock screen and notification bar. The only way to pause or resume or interact with spofity is by re-loading the app or going through app history. To replicate start playing a long playlist, go to the home screen, lock the phone, give it half an hour to an hour and unlock phone.
It's worth noting that I have cleared the cache and I have reinstalled Spotify (as have many others) but it does not fix the problem. It's more than a coincidence that both mine and colleagues (very different) phone have started doing the same thing at roughly the same time.
Any assistance greatly received.