i am trying to call function FeatureLayerView.highlight() on MapView, but it is not working. However, if i use SceneView it works fine. Possible issue is WebGL,
Known Limitations
In 2D MapViews this method is only supported for FeatureLayers that have opted in to WebGL rendering.
Attached file is simple example of code. But it is not working . It looks that WebGL is not working on latest version of ArcGis Server 10.6 . Does anyone know why ?