Fillet problem

The fillet in this example cannot exceed 250 mm. radius. Why is that? (1.9 KB)
GrasshopperFilletProblem.3dm (60.6 KB)

Interesting. It looks like the standard fillet component only works up to half the curve length.

It works with Python, or with the Fillet at parameter component. (9.0 KB)

Thank you for your reply Adam,

Hopefully @DavidRutten can also take a look at it.