Bug Rekordbox 5.1 Related Tracks

The related tracks new features seemed to have killed a very useful feature that was present in 5.0 and below. 

The times I use RB DJ's related tracks, it's nice to see the related tracks in the CURRENT playlist. So as we browse playlists on the left side using CDJ scroll wheel or a controller scroll wheel, the related tracks section on the right shows the matching tracks on the right.  It's nice that  we have the ability now to choose which playlist, but changing that playlist everytime we move do a different playlist is tedious.  I recall someone posting this in the beta forum a month or two ago.

Was this an accidental omission?