I would highly recommend installing qpwgraph. It'll give you a visual patchbay, which will give you a better idea of what applications are exposing audio outs to pipe wire, as well as where those outs are being routed.

If you're on ubuntu-based distro, install the ubudustudio package for pipewire that seems to fix a few things differently than other distros.

Tell us more about your set up, are you on a laptop or do you have an external usb Audio device?

I was able to fix this by switching to lts kernal, temporarily.