I often browse my music, select an artist and say “Play Now.” I then continue browsing and find more artists, but I select “Add to queue.” For the first “Add to queue” this almost always results in a “Play Next”. However subsequent “Add to queues” typically work as expected.
For example:
AC/DC -> Play Now (this puts a bunch of songs in the queue)
ABBA -> Add to queue (this results in the first AC/DC song completing and ABBA starting to play)
Aerosmith ->Add to queue (this results in Aerosmith being added to the queue and playing as I would expect along with ABBA.
Air Supply -> Add to queue (this also results in Air Supply being added to the queue and playing as I would expect)