There's a bug in the Javascript API 4.1 with regard to adding a Graphic to a MapView. The bug did not show up when I used a Web Mercator Map, but it did when I used a Map having the Dutch Spatial Reference (wkid 28992). It possibly also shows up with other non-WGS84-ish Spatial References, but I didn't check that. I've added two short samples: one for version 4.0 (working) and one for version 4.1 (not working). Does anyone recognize this and, if so, know how to work around it?
Cheers,
Wim