wondering why "Result Item Sorting" is ghosted when I am working in esri's Web App Builder configuring a site. I'm using the Query widget and add item, place in my service URL on internal web server and I cannot get the pencil to highlight to sort service (REST) fields. (Feature Service) Is this a 10.4 newbie or I'm on 10.3.1, is there a setting I can change on server-side for in feature (REST) creation?