[Bug] CloudPC ConnectivityResult is empty for some hosts

[AndrewShchetkin]

I'm trying to get a list of cloud PC hosts and select the ConnectivityResult for each host.
Unfortunately, the response does not include a ConnectivityResult for all hosts.

GET https://graph.microsoft.com/beta/deviceManagement/virtualEndpoint/cloudPCs?$select=id,displayName,connectivityResult
response:

{
    "@odata.context": "https://graph.microsoft.com/beta/$metadata#deviceManagement/virtualEndpoint/cloudPCs(displayName,connectivityResult)",
    "value": [
       {
            "id": "a33fffc8-1dee-4743-8598-37f9850824d2",
            "displayName": "",
            "connectivityResult": {
                "status": "available",
                "updatedDateTime": "0001-01-01T00:00:00Z",
                "lastModifiedDateTime": "2026-01-23T12:36:14.4934096Z",
                "failedHealthCheckItems": []
            }
        },
        {
            "id": "c3cd2780-e00f-498c-a674-1398a33487a1",
            "displayName": "frontline-dedicated-2 - Cpc User 1",
            "connectivityResult": null
        }
    ]
}

On the other hand, I can get the same connectivity results for a single host:
GET https://graph.microsoft.com/beta/deviceManagement/virtualEndpoint/cloudPCs/c3cd2780-e00f-498c-a674-1398a33487a1?$select=id,displayName,connectivityResult
response

{
    "@odata.context": "https://graph.microsoft.com/beta/$metadata#deviceManagement/virtualEndpoint/cloudPCs(id,displayName,connectivityResult)/$entity",
    "id": "c3cd2780-e00f-498c-a674-1398a33487a1",
    "displayName": "frontline-dedicated-2 - Cpc User 1",
    "connectivityResult": {
        "status": "available",
        "updatedDateTime": "0001-01-01T00:00:00Z",
        "lastModifiedDateTime": "2026-01-27T13:17:45Z",
        "failedHealthCheckItems": []
    }
}

Could you please clarify the API behavior?