Region Slits Failing

I can’t figure out why the RegionSlits component is not creating the slits correctly…

Some slits are OK and some are not.

The input is a SubD, not a Brep but the same problem occurs if I use a mesh and use Mesh Plane Intersection.

RegionSlitsProblem.gh (29.5 KB)

Hmm… works OK if the input is a simple box…