It's common Android bug, straight from Google. You can find it online searching. It's a problem with Bluetooth implementation and it's not yet fixed in 4.4
Sent from my LG-E975 running KitKat
LG Optimus G - E975-10H- running the latest 4.4.2 CM11 official build
Past: The almighty Moto Defy with CM10.1 by Quarx2k!!