Some Bluetooth audio output devices ("speakers") don't seem to work without AVRCP, so they need mpris-proxy running. See here for example.

I'm running a Debian-12 system and I needed to start mpris-proxy as described in the Arch Linux wiki to make my Bluetooth "speaker" work.

So I'm proposing to add: /usr/lib/systemd/user/mpris-proxy.service

Slightly related: #867 missing ~/phonebook/telecom/ causes connection drop