unmuting itself after taking call

[TC7]

during a zoom in which i had muted myself, I took a phone call.  Normally, it mutes the audio on the zoom and switches over to the bluetooth headset automatically and when I finish the call goes back to the zoom audio still muted.  Recently, it has taken me back to zoom audio but then I am no longer muted.  How can I fix this? 

[Dyno]

Same issue is happening to me. I had to swap to a phone call, and when I switched back to zoom discovered I had been secretly unmuted on a 100+ person call. This could have been really bad if I hadn’t double-checked.