I have a web map in my organization's enterprise portal that uses a hosted vector tile layer as a basemap. I'm building an app using Web AppBuilder that utilizes the Overview Map widget. However, though the Overview Map widget is set to Display: This Map's Basemap, the widget seems to only want to utilize one of ESRI's standard basemaps.
One thing I can get to work is using a custom basemap that was constructed using a cached service from our local aerial imagery, which tells me that the actual widget is responding to changes, but for some reason does not want to honor the vector tile layer basemap. Is this a known issue? Does the Overview Map widget not support vector tiles?