Does the "zoom_to_selection" URL parameter support a search widget using a locator service? ... or, does the search widget have to be configured to search a feature layer?
If a locator service is NOT supported, are there plans to support this? We have several of our WAB apps where users make use of the "find?" URL parameter for zooming an app to a particular feature, and our search widget for those apps use a composite locator service so we don't have to publish or configure multiple feature layers.