tube stub won't start at fitting

When I start a route by right clicking on the c-point of the fitting, a tube stub appears but it isn't attached to the c-point of the fitting.  It is floating apart from the assembly at a distance.  When I start a route by clicking on "Add Point" and selecting a face, then a tube stub appears in the correct place.  Why won't the route generate correctly in the first instance?SolidworksRouting