Our users are not able to work with private content in our hub site even after first logging in. Specifically, filtering. Users are prompted to again log in once they attempt to explore the dataset. Many of us use ADFS logins which is not an option when prompted within the table preview. We can discover the item, which is hosted in AGOL.
Can you check why the hub site is not recognizing that a user is already logged in to work with private content?