There are thousands of small UI problems and bugs. To me, the biggest joke/travesty is their "algorithm" which literally builds a top20 radio station echo chamber around you the moment you dare casually play a song. Then you're imprisoned rapidly by your own choices. The autoplay decision-making is atrocious. You are guaranteed to hear a song you just played manually within 10 songs. It's so painfully dumb. You could write a better system using a random number generator.