I added a field to a hosted feature layer view and created a domain with two values, 'Archaeological,' and, 'Tribal.' I added this field to a field map form. When I add a feature using the field map app, I see this drop down. When I add a feature in ArcGIS Online, the values must be entered manually. We will be adding features both in the field with field maps and directly in ArcGIS Online.
This is what the field entry window looks like for other fields that have a domain. The field entry window for the field I added does not have this indicator in AGOL. The field map does, and users can choose values. Is there a setting that I am missing?

Thank you,
Randy McGregor