I've noticed a few weird issues:
1. When I play a specific game, after a while the phone will not play any sound. Restarting the phone fixes it, but force-closing the game does not. This is particularly annoying because I tend to play the game after work and I rely on my alarm in the morning (which will go off but with no sound unless I restart the phone).
2. All videos seem to have playback issues, including Facebook-embedded videos and YouTube. It will work when I turn the phone on, but it stops working after a while (seems unrelated to the 1st issue but I'm not sure).
3. Phone audio will randomly pause while connected to Bluetooth devices. Confirmed with my car audio and Bluetooth headphones.