pipewire-pulse does not always terminate when pipewire is terminated

I noticed two of them lingering: jocke 8233 0.0 0.0 80060 4768 ? S<l 15:43 0:00 /usr/bin/pipewire -c pipewire-pulse.conf jocke 28309 0.0 0.0 82476 7596 ? S<l 10:55 0:00 /usr/bin/pipewire -c pipewire-pulse.conf

I am running openrc and start from pipewire.conf:

context.exec = [
    #{ path = <program-name> [ args = "<arguments>" ] }
    #
    # Execute the given program with arguments.
    #
    # You can optionally start the session manager here,
    # but it is better to start it as a systemd service.
    # Run the session manager with -h for options.
    #
    { path = "/usr/bin/pipewire-media-session"  args = "" }
    #
    # You can optionally start the pulseaudio-server here as well
    # but it is better to start it as a systemd service.
    # It can be interesting to start another daemon here that listens
    # on another address with the -a option (eg. -a tcp:4713).
    #
    { path = "/usr/bin/pipewire" args = "-c pipewire-pulse.conf" }
]
´´´