Web Service symbols appear distorted in Java Script API Map

Question

We are trying to consume a web service inside a Java Script API.  This same service displays fine in our Portal and on ArcGIS Online, but when added to our API map, the symbols appear distorted. See attached image.

This web service is hosted by our vendor, not one that we host internally.

Any ideas?

Map Service Layer.jpg

LauraGiboo · Answer

I think we are at 4.2 because that was the current version when development started on this app.

UndralBatsukh · Answer

We are at version 4.25! 4.2 version is retired and we no longer support it. Is there a reason why you are using such old version?

LauraGiboo · Answer

We are using JavaScript API version: 4.2

As for the symbol, I have an attachment in my original ticket. This is hosted service by a vendor, so I don't have details on their symbology and how its set up.