Issue with /chats?$expand=members

Question

I'm having an issue with /chats?$expand=members

This request returns data but the displayName, email, and tenantId properties on the members are all null, BUT only for users in my tenant. Users from other tenants show this information correctly.

The first 2 members in the sample below are from my tenant. The third member is an external user.

{​  
    "id": "<redacted>",  
    "topic": null,  
    "createdDateTime": "2016-11-02T17:28:43.781Z",  
    "lastUpdatedDateTime": "2021-02-01T19:42:00.055Z",  
    "chatType": "group",  
    "members@odata.context": "<redacted>",  
    "members": [  
        {​  
            "@odata.type": "#microsoft.graph.aadUserConversationMember",  
            "id": "<redacted>",  
            "roles": [],  
            "displayName": null,  
            "visibleHistoryStartDateTime": "0001-01-01T00:00:00Z",  
            "userId": "f<redacted>3",  
            "email": null,  
            "tenantId": null  
        }​,  
        {​  
            "@odata.type": "#microsoft.graph.aadUserConversationMember",  
            "id": "<redacted>",  
            "roles": [],  
            "displayName": null,  
            "visibleHistoryStartDateTime": "0001-01-01T00:00:00Z",  
            "userId": "1<redacted>a",  
            "email": null,  
            "tenantId": null  
        }​,  
        {  
            "@odata.type": "#microsoft.graph.aadUserConversationMember",  
            "id": "<redacted>",  
            "roles": [],  
            "displayName": "n<redacted>m",  
            "visibleHistoryStartDateTime": "0001-01-01T00:00:00Z",  
            "userId": "0<redacted>7",  
            "email": "n<redacted>m",  
            "tenantId": "72<redacted>47"  
        }  
    ]  
}​  

Answer 1

• I tried repro the issue with Graph Explorer and POSTMAN with the above Graph API call and i failed to repro it.
• It works for me!!

If there any additional steps please share so that i can give a try as well.