Selecting rows from external object dropdown in data model

This is on a Skuid developers site on AWS.

Can’t select rows from the external object name dropdown when creating a model from an odata connection from Northwinds.  Using URL=http://services.odata.org/V3/Northwind/Northwind.svc/
When building Model, returns a list of object names but when I click on one, nothing gets selected and stored in the field.

2/9/2017 - I’ve discovered through trial and error that if I start typing an object name in the field, it begins to autocomplete and then if I select one of the choices, it gets stored in the page field but not not recognized as a field change and the Save button is still disabled.  If I change some other field to get the Save to become active and save, it appears to save the data but when I go back, the object name selected is not there, i.e., not saved.