A minor regression is that qutebrowser gets a org.mpris.MediaPlayer2.chromium.instance[0-9]+ D-Bus name for its MPRIS interface, e.g. org.mpris.MediaPlayer2.chromium.instance124, instead of org.mpris.MediaPlayer2.qutebrowser.instance[0-9]+.
This seems to be a regression Chromium as I noticed this also in Chrome deb releases, stable and unstable, and only Edge have this set correctly, using org.mpris.MediaPlayer2.edge.instance[0-9]+.
I'm actually stopped using MPRIS, so I'm just looking the xdg-dbus-proxy log ($ flatpak run --log-session-bus ...) and D-Feet.

Originally posted by @tinywrkb in #5395 (comment)

Split out from #7202