We can confirm that this is how shuffle works for now in some Spotify created playlists, but won't affect your own playlists.
We're always testing things by adding or removing features to make Spotify better overall and we’re constantly aiming to improve our features. We’re sorry that this means you’re not able to use Spotify like you wish to do at the moment.
You can read more about how your feedback reaches Spotify here.
Once again - thanks for the feedback, we appreciate it. Let us know if we can help you with anything else.
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