Current Build: 188.8.131.522.g19436fa3 (Mac OSX 10.12.6)
Problem: When dragging the currently playing song from the play queue the tooltip displays [0 items] ( see screenshot)
Steps to reproduce
1. Open Spotify and search for something
2. Pick a user playlist and start playing
3. Switch to the play queue view
4. Try to drag the currently playing song
Note, the next and any other songs in the queue can be dragged, as can the song which is "current" if you navigate to its previous song. The contextual (...) menu, -> Add to your playlist does work for the current song, so the bug seems to be restricted to drag/drop
We've tested this from our end and it seems to be expected behaviour. Since the song you want to move is the one you're listening to,the app won't allow it to be clicked and dragged to a different section when you do it from the Queue view.
No worries though! You can still do so from the bottom left corner and drop it into the playlist you'd wish.