Headset buttons override on 5.1.2 Lollipop

[Verrrtigo]

Hi.

Been using Spotify on Android (phone: Galaxy S2). Everything was fine when I had the original software for the phone (4.1.2 Jelly Bean). The headset buttons would control the music app that was currently active. For example, if Spotify was turned off, the headset buttons would play/pause and skip songs from the phone music player. If Spotify was turned on, the headset buttons would control Spotify songs.

I've had problems with the original software clogging up and got fed up with it, so I installed a custom ROM - CyanogenMod 12.1, which roughly corresponds to Android version 5.1.1 (Lollipop). And this is where it went wrong. Now the headset buttons always control Spotify, even when it's turned off. Even when songs are playing on the phone music player, pressing the headset buttons prompts Spotify to launch and start playing the next song.

I could not find any setting to override this in either Spotify, phone music player or general phone settings.

I frequently listen to music where internet connection is not readily available and do not have enough space to store music offline, so the phone music player at times gets as much, if not more use than Spotify.

As of now the only method I've found to fix this is uninstalling Spotify. Obviously this is a very counterproductive method, has anyone else had the same problem and managed to solve it?