Amphy

I had this issue on my desktop in Windows. Haven’t tested to see if it’s an issue on Linux (I just recently set up dual-booting with Kubuntu). I know your request is for Nobara but this may be helpful for troubleshooting.

The fix for me on Windows was always to power off my audio interface. Using powercfg /requests would show Firefox kept the audio device active once a YouTube video started playing. The software fix was arbitrary… sometimes closing the YouTube tab would work, sometimes I had to close the window, and sometimes none of those would work. What *always" worked was physically powering off my interface, waiting about 2 seconds, and turning it back on.

might be best not to encourage that behavior