I've taken the demo page and replaced the San Francisco 311 feature service with a map servicce for Homeland Security --http://sampleserver3.arcgisonline.com/ArcGIS/rest/services/HomelandSecurity/operations/MapServer/0. The features draw correctly but upon clicking on one of the features I receive the error, "Uncaught TypeError: Cannot read property 'y' of undefined." Logging the geometry.y value on line 19 of EsriJSONLayer.js reveals that the "y" coordinate is repeated multiple times.