Quest 0.4.81: filters are working?

Hello there,

I'm trying to play with new filters mechanisms. I added the two ~/.config/pipewire/pipewire.conf.d/loopback-1.conf and ~/.config/pipewire/pipewire.conf.d/loopback-2.conf, as explained in docs/rst/daemon/configuration/policy.rst.

But then playing an audio file doesn't produce the expected graph.

Am I missing something? Is it expected to works on this early 0.4.81?

Thanks for answers!