@Ravenwish66 You should be able to exit the Pandora app on your iPhone 12 the same way you do with other apps.
If that doesn't resolve the issue, can you please send me a screenshot of where you can see the app is still running in the background?
(Please note you won't be able to attach images via email - you will need to open this Community link in a web browser in order to provide attachments)
Thanks for working with me on this.
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