ARC map clustering switches off when filter is selected

I have found what I think is a bug with the ArcGIS map object. I have plotted columns of latitude and longitude, clicked 'edit', and changed the map theme to 'Clustering'. However, when I filter the latitude and longitude based on values in another column, the clustering is removed and I am left with the individual coordinates. Even when I take the filter off the clustering stays off too. I don't think the ArcGIS feature always did this -- is it possible it has broken in a new update? I have the latest version of PBI desktop as of today. Many thanks in advance.