Open Radar

 
Summary:
In iTunes with Apple Music subscriptions or music saved onto your Mac. If you select an album and press the "Add To Playlist" button next to the Albums name via the 3 dotted button and choose "New Playlist", a new playlist is created with all the songs listed inside the playlist and after a few seconds the individual songs are removed but the playlist remains.

Steps to Reproduce:
1. Open iTunes
2. Select an Album (either from Apple Music or your Library)
3. Press the (***) button next to the albums name
4. Choose "Add To Playlist"
5. Choose "New Playlist" from the next menu shown
6. You are taken to the newly created playlist; watch them disappear.

Expected Results:
When you add an entire album to a new playlist the expectation is that all songs from the album would remain in the playlist until manually removed by the user. 

Actual Results:
When an entire album is added to a new playlist, after a few seconds the individual songs are removed from the playlist but the Playlist remains.

Version:
iTunes 12.12.3.17, Mac OS X 10.11.4 (15E65)

Notes:
If you create a playlist from an individual song, or drag-and-drop individual songs to a new playlist, the issue does not occur. 

Configuration:
MacBook Pro 15" (MacBookPro11,3) 16GB RAM, OS X 10.11.4