I don't know if there are more people with this problem? But my playlists don't update anymore I for instance changed my favorites but on my android phone it does not reflect the songs I have in my desktop.
That seems to be happening to some users at the moment.
From what I've seen, it seems to fix it for most users if you create a new playlist, then drag and drop all the songs from your old one into your new one no more than 100 at a time. I think Spotify has a slight issue with large playlists at the moment!
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