Certain mesh not differencing in GH

Hello!

I’m hoping someone might be able to point out what I’m missing or if I’ve found some kind of a bug.

As demonstrated in these two sets of screenshots, it appears one of the “S” meshes doesn’t want to difference in grasshopper, and I can’t seem to figure out why.

Working setup:


Not working setup:


I am using the Wombat plugin in this case for the Boundary Mesh component.

Any insight would be much appreciated!

Diagnostic.3dm (95.3 KB)
Diagnostic.gh (22.4 KB)