I posted this in the main forums earlier and have since found many other examples of people asking for this feature. I wanted to put it here to add my voice, just in case the developers actually read these.
Would it be possible for the devs to implement string:'Position' on the DBUS interface? At the moment it returns "int64 0" no matter the current position.
Full example from the CLI:
dbus-send --print-reply --session --dest=org.mpris.MediaPlayer2.spotify /org/mpris/MediaPlayer2 org.freedesktop.DBus.Properties.Get string:'org.mpris.MediaPlayer2.Player' string:'Position'