In a play app with v 2.5.x all the api's were returning json, (all the ajax call from frontend expects the response in json)On upgrading to latest v2.6.x same api's are returning json string instead of json(we could handle the present situation in frontend) ,but not sure why these rest api's are returning json string instead of json?following same syntax as mentioned in : https://www.playframework.com/documentation/2.6.x/JavaJsonActionswant more details on the problem please do ask.