Hi,
Thank you for posting in Microsoft Q&A forum.
Per my experience, it's expected behavior. In the Intune portal, it maps user account to devices by using the primary user.
To setup shared iPad, we should set User affinity to enroll without User affinity. So there is no primary user for shared iPad, and the login user will not be shown under the shared iPad in Intune portal.
Hope it helps. Thanks for your time.
Best regards,
Simon
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