Lumia 920 with WP 8.1 - Audio out switches to mono after a call

My audio out switches to mono after ending up a call. The problem fixes everytime after a reboot. But comes up again after a voice call and has to reboot again and again to fix it.
I started experiencing this bug after updating to the 8.1 developer peview . The device is a Lumia 920. Anybody else having this issue?

This is a widespread issue and happens on all devices (although I've never experienced it personally). Many people have reported it on the forums.

This happened before, I thought it was a 920 issue, as it happened to me occasionally , but since 8.1 it happens everytime I am listening to FM Radio and answer an incoming call.

I am sure it will be fixed but it happens to me as well - primarily on my Lumia 925, however. It happens all of the time when using the aux input on my car. Music will constantly change to output audio in mono...I am left to reset my phone quite often.