Hi Paul, I think Francesc is possibly referring to the fact that in the Tracks window the numbers show, but in the now playing window there is just the track title without the number. I also would like the track number showing in the now playing window on all of the different UIs. It lets you know where you are in an album quickly. Or even something like when CD ripping ie. 7/11 which lets you know the track number and also the number of tracks on the album.
I have started editing tracks with a hyphen followed by a space in any new additions to my collection, and this allows the track number to show in the now playing window (see screenshots), but this would be a very long process to carry out for my whole collection. Maybe a software tweak?