I'm reporting this as a bug, because this functionality doesn't feel intentional:
If you rightclick a track from the Tracks list and select
Play Now while the Auto-DJ playlist is active, the Auto-DJ's playlist will be replaced with the currently-shown Tracks list.
I would
expect Play Now to work the same as
Queue Next — the only difference being that it would immediately start playing the first newly-added track.
I regularly forget that it
doesn't work this way — so I end up clearing my manually-curated Auto-DJ list, when I just want to play a different track right now