pipewire-pulse: ALC1220 on ASUS Strix TRX40-E: no sound and no controls, but works fine with pulseaudio

When I replace Pulseaudio with pipewire-pulse, I can't get motherboard integrated audio to work. External USB DAC works, Bluetooth receiver works, but integrated ALC1220 doesn't. There is no sound when I select it as output device, and Gnome's Sound settings dialog looks kinda broken: And clicking "Test" shows a dialog with no channels/buttons: With Pulseaudio, there are two buttons to test left and right channels (and they do work)

Arch Linux PipeWire 0.3.21