I have new Macbook Pro 16' with Mac OS Catalina (obviously I can't downgrade)
From time to time, music stops playing inside the headphones (WF-1000XM3). The headphones are still connected, but sound output switched from the headphones. Changing sound output to the headphones will produce spinning wheel, but will not actually change it.
- Turning off and on the headphones sometimes fixes the issue.
- Resetting BT module temporary fixes the issue (SHIFT + OPTION + click on BT in menu bar)
It's was really frustrating, How I fixed it is below.