Another bug 
Listening to music on my Bluetooth headphones (momentum M2) and I noticed the sound quality would change every few minutes. It would go from crisp to dull.
I went into the audio menu and spotted that when the sound was 'dull' it was because all of the audio processing options were being ignored. I could change the equaliser settings, clear audio, bass boost etc and it would make no difference.
After a minute or so the sound quality would change and when that happened, all of the audio settings produced noticeable changes again.
This seems to be happening consistently