Not sure if this is a new issue or a known problem but I couldn't find another post about this on here.
I have a polygon feature set of parcels that are spread out through an area. I was hoping to use the aggregation setting in the map to bin them so when field workers are looking at them on a mobile device, it'd be easier to see where the areas of interest are. However, when it is viewed in Field Maps, the aggregation doesn't appear.
Desktop web map view:

Mobile Field Maps view (hard to see but just the regular parcel outlines are showing):
