Inconsistent Microsoft Graph Api $count response for users

I'm trying to get a total count of users through Microsoft Graph API through my B2C AAD tenant, but the response seems to either error out or is omitting the @odata.count property.

Feedback online is also mixed where some people say that $count is still unsupported even thought the official documentation says that $count is supported for /users.

https://learn.microsoft.com/en-us/graph/query-parameters#count-parameter

I tried through the graph api online version: https://developer.microsoft.com/en-us/graph/graph-explorer?request=users?$count=true&method=GET&version=v1.0

With this result:

{
    "@odata.context": "https://graph.microsoft.com/v1.0/$metadata#users",
    "@odata.count": 31,
    "value": [
    ...
    ]
}

However doing the same thing through something like postman nets me this result:

GET /v1.0/users?$count=true HTTP/1.1
Host: graph.microsoft.com
Authorization: Bearer [token]
ConsistencyLevel: eventual

{
    "error": {
        "code": "Request_BadRequest",
        "message": "This request is not supported by the service",
        "innerError": {
            "date": "2020-10-09T18:19:44",
            "request-id": "4d97fd77-19ad-42f9-9357-66c24c867ce2",
            "client-request-id": "4d97fd77-19ad-42f9-9357-66c24c867ce2"
        }
    }
}

If I remove ConsistencyLevel header, I get a valid response but there is no @odata.count property.

Is there some Graph Api permissions that I am missing, or is this expected?