devices expand=registeredUsers does only return the id

Describe the bug

Using the devices endpoint in graph and the parameter expand=registeredUsers is supposed to return (all) values for all registered users.
Each registered user is supposed to be of type #microsoft.graph.user
Using graph-explorer, this works, i.e. https://graph.microsoft.com/beta//devices?$expand=registeredUsers
will contain a list of microsoft.graph.user objects in the registeredUsers property, where each user has attributes like mail, imAddresses etc filled.
Using the SDK only the id property for the microsoft.graph.user object is filled, i.e. all other properties are None or empty collections.

Is this a bug or something on my end I don't understand?

my calling code (broken down):

request_config = DevicesRequestBuilder.DevicesRequestBuilderGetQueryParameters(
        top=20,
        expand=['registeredUsers']
    )
self._event_loop.run_until_complete(self._graph_service.devices.get(request_config))

where _event_loop == asyncio.get_event_loop()
and _graph_service == GraphServiceClient

Expected behavior

A list of devices is returned, where registered Users of type #microsoft.graph.user in the device's registeredUsers property have more properties filled than just the ID

How to reproduce

See description

SDK Version

1.56.0

Latest version known to work for scenario above?

No response

Known Workarounds

No response

Debug output

No response

Configuration

• OS: MacOS 26.3.1
• Arch: Apple Silicon
• Python: 3.13.7 (venv)

Other information

No response

Commencez par reproduire la requête via GraphServiceClient et DevicesRequestBuilder avec expand=['registeredUsers'], puis comparez la réponse du SDK avec la réponse de Graph Explorer. Suivez la manière dont registeredUsers est représenté et renseigné dans les objets d’appareil renvoyés ; la tâche est terminée lorsque les utilisateurs développés exposent des propriétés au-delà de id, correspondant à la réponse du service.