fillet not working properly

[CMC]

I was using the fillet curve component in GH a lot in the past few
days and I realized that it's not working in the way I expected: it
works with a curve that has a 90 deg angle, but if you later modify
the curves (and the angle as a consequence) it changes the radius of
your fillet. In other words sometimes the fillet component is telling
you that the radius has a certain value, but watch out because it
could be totally wrong.
Please let me know if you had some issues with it too.
Thank you
cmc