Hi @Adamwild thanks for posting! Sorry for any trouble with offline content.
Can you clarify what you mean by storage? Offline content for Pandora will remain within the Pandora app itself.
Can you do me a favor and confirm that when you turn Offline Listening on, there is no downloaded content? If you're able to share a screenshot of what you're seeing, that would be the best.
Keep in mind, signing out of the app will remove any offline content from your device and you will need to download the content again.
Let me know.