In the old (and vastly better) version of the Spotify desktop app the artist name was listed in a separate column in playlists. With the new version the artist name was moved and placed right below the song title. This makes it:
Much more difficult to browse the playlist and find the artist/song you want to play.
Display less songs on screen - you have to scroll more - since every row takes up more space (well the addition of artwork and increased font size(?) "helps" with that matter as well).