Filter path is applied only to the first request of ScrollAPI

Hi
Nest ScollAPI uses defined filter path only in the first request.
Next requests don't contain filter path and fetch too much.
Used filter path (e.g. FilterPath = new string[] { "hits.hits._source", "hits.hits._score", "servererror", "isvalid", "_scroll_id", "hits.total" } ) with ScrollAPI.