This is a strange issue.
I am currently running Energy Rom on my XT907, TWRP 2.4 (started happening after i completely restored all missing apps and got my phone to the exact state before i flashed the new rom)
I have had this issue since i rooted, 4.1.1 and 4.1.2
i have also had this issue on my XT912 4.0.4 (rooted)
i can make calls and listen to bluetooth audio just fine. however when i receive a call i the audio is directed to the handset. if i disconnect bluetooth (dialer shows bluetooth as the main audio device) and select handset, then reselect bluetooth, the audio goes to bluetooth.
i reflashed back to base Energy Rom (bluetooth works perfect) and am starting to re-install application to see if i can narrow down the scope. i wanted to create this topic to see if anyone else has figured out this issue or has had this issue.
Thanks in advance!