It won’t help you much, but I’m on zoom-5.7.31792.0820_openSUSE-1.x86_64, which is the current one according to https://zoom.us/download and that one works fine for me. Having pipewire-0.3.35-1.1.x86_64. Can you exclude networking issues?
Sorry for replying late…a simple fix of changing the audio profile to “Mono input” in lieu of “Pro Audio” for the camera fixed the issue. I had it previously working with “Pro Audio” working, but not sure any of the pipewire updates caused the issue.
I re-installed clean OpenSUSE tumbleweed and now I am not seeing the “Pro Audio” option, and just the “Mono input” and all is working fine now.