Not sure if this is a bug or intentional, but I've noticed since the update that I can only add 1. song. at. a. time. to a playlist (unless I'm adding them from "Your Music: Songs").
Ex: I want to add 4 songs from a Band of Horses record. I Ctrl+click those 4 songs and drag them into my "Band of Horses" playlist, only 1 of the selected songs will be added to the list - I have to go back to the album and select the other 3 and individually drag each of them to the list.
I can still drag an entire album into the playlist and, like I said, if I select multiple songs from Your Music, all of those songs will be added - just groups of tracks from albums or search results are not working.
On mobile a similar idea has been suggested here:
Hey there! I can not reproduce this issue with version 1.0.2 + . Maybe it has been fixed - if not please provide more information about your Spotify version, your OS and what exactly you're trying to do in the respective help forum, so we can check it out there.Thanks!