Upon searching in ArcGIS Online with the Gazetteer style geocode service for a polygon layer, the map zooms to and places the pop-up for the polygon at the origin of the projection (0, 0). This behavior is seen with Gazetteer style geocode services published to ArcGIS for Server 10.2.2 and 10.3.
Use the Single Field style address locator rather than the Gazetteer style address locator.This returns point geometry for the polygon centroid. However, it does not encounter the same issue seen with the Gazetteer locators in ArcGIS Online.