@TeamYouTube plz add a function to "search for playlists to add videos to". Can't add vids to playlists PERIOD (unless it's recently created playlists)..
Playlists themselves changed as well, so I can't add new videos from WITHIN THE PLAYLIST either. @YTCreators
CONT: Old interface didn't have these issues since I could easily click "add to playlist" then type search for said playlist.. for some dumb reason that function is no longer available with the new interface.