I am just starting to get this going and i am testing this on Jessie.
I am not able to get any sound going looks like something is missing because i manage to pair my nexus 4 and my headphones but as soon as they pair they get disconnected. Weird thing is i am connected on my nexus 4 but the only selection i can share with my phone is the contacts. it almost looks like the audio is not routed .
My headphone works fine on Lubuntu 17.10 which has bluez 5.46-0ubuntu3
My logs
https://paste.osmc.tv/ebepiliqig