I noticed the same problem today and could pin it down to wireplumber. After downgrading wireplumber and libwireplumber to version 0.5.12-1 the problem is gone, but that can only be a temporary solution. As I’m currently working I didn’t have much time for searching a solution. I would also be interested to know how to debug further when coredumping occurs.
Edit:
I found this related gnome issue
So for now it’s best to stay on wireplumber 0.5.12-1 until they solve it.