I am having a problem with no audio being routed to my Bluetooth in vehicle. This is a critical bug for me due to where I live having one of the strictest distracted driving laws.
After turning on the device no audio is working during calls. Mic and speaker since neither person hears anything.
Media audio doesn't work either. But I have found a non permanent fix for that.
If I connect to Bluetooth and start music it is silent but if I go into the Bluetooth settings and choose the preferences for that specific device and toggle the "media audio profile" off then on and restart the music it will work fine until I lose the connection. I have to repeat every power on.
The same type of fix doesn't work for call audio though.
Edit: Just noticed if I leave the phone audio profile turned off that media audio works fine all the time.