Edge.is_interior returns true for non-interior edges on cylindrical faces

[jwagenet]

Edge.is_interior returns true unexpectedly for the edge on a cylinder or parallel edges on fillet faces. In this part only the interior edges joining the XY faces to the cylinder are expected.

with BuildPart() as part:
    Box(5, 5, 1)
    Cylinder(2, 5)
    edges = part.edges().filter_by(lambda a: a.length == 1)
    fillet(edges, 1)

show(part, part.edges().filter_by(Edge.is_interior))

Tested in 0.9.1