We have ArcGIS Enterprise 11.3.
We observed a very strange behavior with ArcGIS Portal Map viewer.
The users with User Type (Creator) + Roles (Viewer, Publisher, Data Editor), when try to view any map services or feature services in Portal Map Viewer its just a blank, the same works when they open the same in Classic Map viewer. How/What can trigger this behavior?
If we open the same services by adding them in a web map, they throw an error stating failed to add layers, and open the map with other layers, not sure what is different with those layers. The non-working layers have been tested with all sharing levels.
While researching we also found that someone tested this by replicating it and stating it as a Pro issue.
The weirdest part is everything works with Classic Map Viewer. Can it means its an issue with map viewer and Pro version compatibility? Which I suspect are no way related to roles?
- Opening a Map service or Feature Service in Portal Map Viewer

- Opening the same Map service or Feature Service in Portal Map Viewer CLASSIC works

Users with creator + admin works without any issues, they can open the layers in old and new map viewer.
Any thoughts on the would be highly appreciated!!