Hi Dean,
Greetings from Syncfusion. We have checked your sample with our Bing Key. We can see the ShapeFile on top of the BingMap within the US map area (Zoomed the US map region). Currently, we have the positioning issue when adding the Shapefile layer as Sublayer and this fix will be included in our upcoming Volume2 release which is scheduled to be rolled out in the end of June. Also, Shapefile are rendered in closed path for line path in the current version, we will provide the polyline support in our Volume2 release. We appreciate your patience until then.
Screenshot:
Regards,
Bharathi.