It sounds like you're on what's called an A/B test. The reason why you're currently missing some features is explained here. Spotify is always testing things in order to improve the overall Spotify experience.
Sorry for the inconvenience! Let me know if you have any other questions :)
Noah-SRock Star 4
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I think it's not this problem, because I've never seen the "share to instagram story" option. And I have the premium version, I'm starting to think that it's not worth paying to have less features than others...