I'm attempting to use the GetEnterpriseUsersAsync/GetEnterpriseUsersMarkerBasedAsync APIs from the .NET client, but it appears the actual API at box has a regression w.r.t. to the usermarker parameter.

Basically:
GET {{boxBaseUri}}/users/?usemarker=true&external_app_user_id=ABC

{

    "users": : ... ]

}

Which is NOT marker based.

Supporting evidence:

https://gist.github.com/watfordsuzy/c5f85f1099e259f64e5acb4b0881d18f