Multi-polygon bringing in extra/redundant polygons? about nettopologysuite.io.esri HOT 6 CLOSED

public IEnumerable<Geometry> GetShapeFileGeometries(string filePath)
{
    var geometries = new List<Geometry>();

    var opts = new ShapefileReaderOptions()
    {
        GeometryBuilderMode = GeometryBuilderMode.IgnoreInvalidShapes
    };

    foreach (var feature in Shapefile.ReadAllFeatures(filePath, opts))
    {
        if (feature.Geometry.IsValid)
        {
            geometries.Add(feature.Geometry);
        }
    }
    return geometries;
}

class MapPolygonShapesFactory
{
    public IEnumerable<MapShapeBase> BuildShapes(IEnumerable<NetTopologySuite.Geometries.Geometry> geometries)
    {
        var mapShapes = new List<Microsoft.Maps.MapControl.WPF.MapShapeBase>();

        foreach (var geometry in geometries)
        {
            NetTopologySuite.Geometries.GeometryFactory factory = geometry.Factory;
            NetTopologySuite.Geometries.Coordinate[] coordinates = geometry.Coordinates;
            NetTopologySuite.Geometries.Point[] points = coordinates.Select(factory.CreatePoint).ToArray();

            if (points.Count() < 1) continue;

            var mapPolygon = new MapPolygon
            {
                Locations = CreateLocationCollection(points),
                Stroke = new SolidColorBrush(Colors.Black),
                Fill = new SolidColorBrush(Colors.Orange),
                StrokeThickness = 2
            };
            mapShapes.Add(mapPolygon);
        }

        return mapShapes.ToArray();
    }

    private LocationCollection CreateLocationCollection(Point[] points)
    {
        var locations = new LocationCollection();
        foreach (var point in points)
        {
            // For the Location construction, pass in point.Y for latitude and point.X for longitude.
            locations.Add(new Microsoft.Maps.MapControl.WPF.Location(point.Y, point.X));
        }
        return locations;
    }
}

public void AddShapesToMap(IEnumerable<MapShapeBase> shapes)
{
     var mapLayer = new MapLayer();
 
     foreach(var shape in shapes)
     {
         mapLayer.Children.Add(shape);
     }
     MapLayers.Add(mapLayer);
     MapLayers = new []{mapLayer};  // Only allow one map layer in this code snippet.
}

public MapLayer[] MapLayers{ get; set; } 

<m:Map ...>
    <m:MapItemsControl ItemsSource="{Binding Path=MapLayers}"/>
</m:Map>