Except any details that would help troubleshooting.
18.0, .1, .2? .3 Beta?
Visit via Safari? Some other browser? Only MacRumors? Do you have any extensions installed?
What's this about YouTube? Are you using the YouTube app or going to YouTube in a browser? YouTube pauses whenever you leave it unless you pay for Premium, so this seems normal. Or is YouTube pausing your Music.app? Like you want them both to play simultaneously? I can't make sense of this statement.
I’ve noticed this also…it’s not regular enough that I know what websites and when. But it seems to be old info that’s stuck feo. A previous website, not the one I’m actually visiting