Map alignment lost when switching from Classic Map Viewer to New Map Viewer

[RenBou]

I have a map with three KML layers (all with the same web mercator projection). The coordinates lay correctly on the map in the Classic AGOL map, but then when I open them in the New AGOL map, the coordinates are off on one of the layers.. The same thing happens when I open it in Experience. 

Also, the New AGOL map would give me an error when I tried to add any of the KML files to a map. I could only add them to a map in the Classic version. (maybe this is a clue...or coincidence?)

You can see how the coordinates are off for the Flashiness (blue) layer in the attached screenshot. 

What could be making this happen? 

Thanks for any insight! 

-Renee

[RussRoberts]

can you share the KML layer file causing the issue?

[RenBou]

Here is a link: https://arcg.is/5D1zP

I am a total ArcGIS newbie, so please explain things like I'm in 6th grade. Thanks! 🙂 

[RussRoberts]

Shifting looks to be a known issue in the JSAPI that both Experience builder and MV will present when loading a KMZ file as a KML layer. BUG-000115201

I am looking into why the layer is throwing an error when being added in MV.

[RenBou]

Any ideas if there is something can do for this bug? Thanks!

[RenBou]

Any ideas if there is something can do for this bug? Thanks!

[RussRoberts]

Can you use a WGS84 offering of the basemaps? This fixes the offset issue.