In AGOL New Map Viewer, the legend is duplicating some items that were grouped together in ArcPro when published. This same service in Enterprise Portal / Classic Map Viewer displays correctly in the legend. Is this perhaps a bug with the New Map Viewer? Or do I need to do something (write some arcade script) to get the behavior I want?
Some info:
- Our portal is version 10.9.
- Streams in AGOL is via distributed collaboration
- Yes, I really want these items grouped
Below are some screenshots to illustrate the issue:
New Map Viewer in AGOL (duplicate stream legend items):

Classic Map Viewer from our portal (streams in legend works as expected):
