with SplitSurface I get a strange order of resulting surfaces. To create the surface I used Pufferfish OffsetCurve (because in my real project I need 2side-Offset of a curve with closed ends) and GH’s own Boundary Surface component.
When reproducing Split with a “normal” Rhino Surface (in GH) it works allright.
Any hints to the right direction are highly appreciated. If there’s a Python solution, that’s fine with me.