[V8i VBA] ShapeElement.Normal Property

The result of VBA  ShapeElement.Normal property is incorrect in a 2D model.  Both clockwise and counter-clockwise shape elements have  the same normal.

I placed two shapes in a 2D DGN model, then reversed one of them.  On checking the value of the normal of each ShapeElement, the result is 0,0,1 in both cases.

I expected the clockwise shape to have value 0,0,-1.  Is my expectation misplaced?

If I place two similar shapes in a 3D model then the normal of the clockwise shape is what I expect.