This is and odd experience indeed, and this behavior sounds as unintentional. Could we ask you to share with us the current Spotify version you have on your iPhone 12 as well as your exact iOS version.
It's worthwhile to perform a clean reinstall of the app, as this is more thorough than the normal one and ensures that no cached data will cause interference with the new installation of your app. See if this will make any difference.
If the above doesn't help, then could you also return with a short screen recording of the situation, so we can investigate this deeper.
Let us know how things work out, we'll be keeping an eye out for your reply.
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