After getting the last (92.0) Firefox I have got a problem on playing YouTube video - loading bar is moving, but video can not be played (timer sticks to zero). Other apps (Zoom, Chromium,…) haven’t got the problem.
The issue doesn’t depend on a device used to playback, be it BT one jr SPDIF output.
With further thinking I have recognized your suggestion has got more value rather than I was guessing at first. I have replaced pipewire with pulseaudio, and Firefox still is not able to play back. So with your help I know now it is the Firefox who is responsible for the problem
I’ve marked this answer as the solution to your question as it is by far the best answer you’ll get.
However, if you disagree with my choice, please feel free to take any other answer as the solution to your question or even remove the solution altogether: You are in control! (If you disagree with my choice, just send me a personal message and explain why I shouldn’t have done this or or if you agree)
P.S. In the future, please don’t forget to come back to your question after your issue has been solved and click the 3 dots below the answer to mark a solution like this below the answer that helped you most:
so that the next person that has the exact same problem you just had will benefit from your post as well as your question will now be in the “solved” status.