OS Sierra: Cannot play audio via bluetooth speakers during Airplay

Cannot play audio via bluetooth speakers during Airplay to my television.

Was able to do so prior to OS Sierra update. Now if I switch to my bluetooth receiver in the System Pref -> Sound -> Output menu it disconnects airplay entirely. This occurs both with mirroring and use as a separate display.

Is there something I am missing about the behavior of this feature? Or is this a bug in the new OS?

Mac OS Sierra ver 10.12

MacBook Pro (13-inch, Early 2011)