Fillet Edge Failing

Hi

I’m trying to fillet an edge of a brep in Grasshopper, and it is returning strange results. The shape looks like this.

In Rhino, I can fillet the edge with a radius of 39mm.

However, if I try in Grasshopper, it fails.

If I change the radius to 38 or 40mm in Grasshopper, it works.

What would be causing this strange behaviour?

Fillet edge.3dm (170.3 KB)

Edge fillet.gh (12.4 KB)

Thank you for your feedback, and I will log this issue with our development enginners.

BTW, If you set the Metric option to Rolling Ball or Edge Distance, the FilletEdge will also work correctly in GH.