My Avid has suddenly started to do the same thing.
It won’t play audio from any other source other than Avid UNLESS I have the Avid windows on top of all the other programs (Mac).
Note: It doesn’t just turn the volume low, the audio speaker monitor symbol turns to mute when I click anywhere else other than Avid.
Michael, your click and hold suggestion doesn’t seem to do anything for me either. Christopher did you sort this at all?
Thanks