Wrong DesktopEntry name in the mpris plugin
The bug has been reported on https://bugs.launchpad.net/ubuntu/+source/totem/+bug/1818422
'My application is asking Totem (video player) various data via (MPRIS2) DBus-interface.
When asking "DesktopEntry", totem return value "totem" (meaning totem.desktop). That is probably wrong.
The right answer would be "org.gnome.Totem". That is /usr/share/applications/org.gnome.Totem.desktop'