offset problem.

I've been working on a definition for a tool path for a milling machine and i realised that there's an issue doing a series of internal offsets on a shape.

Doing an internal offset on an irregular shape, when the amount of the offset is inough in order to have a self intersecting shape and having choosen sharp corners offset type, Gh gives as result only one of the two offseted shapes.

When done manually in rhino, depends on the point one choses on the curve at the moment of the offset.

is there an option to bypass this issue?

Thanx