Repeat tracks and repeat playlist On iOS 8.4 why when I want to play my playlists do I have to constantly "add next" to play all the songs in that playlist? And where is the "repeat playlist" option that was there before?
You can "REPEAT PLAYLIST" in iOS 8.4. I play my playlist on a daily basis in a repeated manner.

Do refer the User Guide for iOS 8.4 version, under page 71.

https://manuals.info.apple.com/MANUALS/1000/MA1565/en_US/iphone_user_guide.pdf

Let me know if it helps.