I have Feature Service in my ArcGIS Online account that is made up of a number of feature layers. The feature service was created by publishing a file geodatabase. I am adding the Feature Service as a
new GroupLayer() and passing a
new PortalItem() to the constructor.
This adds all the feature layers to the map and I can see them in the LayerList. Only features with polyline geometry render properly though. Layers with point geometry cause the GroupLayer to stop rendering (all items in group layer stay at same position on screen even while map is panned/zoomed). It also continuously throws the error
Uncaught TypeError: Cannot read property 'getBoundVAO' of null
If I toggle the visibility to
false for all of the point layers and leave only the polyline layers then the map behaves exactly as expected.
What is even more bizarre is if I change the visualization properties of the point layers in ArcGIS Online to display as a heatmap instead of points then the rendering issue goes away.