multiple album for a track

In the notes to settings/my music/separator for multiple items in tags
it claims that you can have multiple albums tagged for a track.

I tried this using a ; separator (as per the same entry) but it did not work. The album was listed with a slash (/) between the two title suggesting that on some level the separator was recognised, but it still only appears as one album in the list of albums.

what is going wrong here?