2017.04 PRV probs showing Drum Map (Drum Pane) MIDI and "normal" MIDI together

Hi,
 
Sometimes I like to see how my Drum MIDI tracks line up with my bass guitar MIDI. I use a Drum map for the drum tracks (with Toontrack Superior Drums)
I know the "Drum Pane" is separate from the "Track Pane". If I select the drum MIDI track and the bass MIDI track in PRV, I can see them both if the drum track is selected - but if I select the bass track - the drum track (in the drum pane) goes blank.
It does not matter if autolock is on or not - it does the same thing.
 
I can work with this by:
- select both tracks
- highlight the drum track
- turn autolock off
This will let me adjust either or both tracks
 
It's not right though. I should be able to highlight either track - and still see both.
And I should be able to have autolock on - and highlight either track, see both, and edit the highlighted one.
 
Does this make sense?
Could someone (who uses drum maps) check this?
 
Thanks