Spotify not playing the playlist correctly?

Hey, I've been a Spotify user for years and since today it's been playing out of order. It doesn't even stay in a playlist. 😯 Whenever I play a song in my playlist (no matter which one), the next one it plays is a suggestion of what I might like, not what's already in the playlist. It's really annoying. Of course I have shuffle (even that would stay in the playlist) turned off and I also have Premium. I'm confused whether it's me or whether Spotify is just not working properly at the moment. Can anyone help me and maybe even try it out to see if they're having problems with it too?