What could be the reason of nurbs surface not getting intersected?
Like so:
You forgot to attach the 3dm file. Your picture doesn’t help much without it.
I didn’t forget, it’s a hypothetical question and I cannot share this model.
Plot thickens 
Hi Ivelin,
Maybe this is more meaningful for someone else but I all I can see is a big zoom on a grasshopper slider, some curves. You say there is a NURBS surface somewhere so I guess the curves are on the surface but …??? 
From a single viewpoint I cant work out what shape you are dealing with…
Exactly!
The original post and the title itself is explanatory enough. Suffice it to say: Intersecting a nurbs surface with a plane and not get a continuous intersection (where it should be).
I look for ideas why this could happen so I can troubleshoot myself.
Not uploading any models. I highly doubt this is a new thing.
All I see in the status bar is huge numbers. Sounds like incorrectly chosen model units in my opinion… 114 meters with a hundredth of a millimeter precision?
not incorrectly, perhaps not thought through by the devs.
Ship significant unit is mm although some ships are 200+ meters long.
I can’t believe this Rhino flaw is again coming into play.
Someone has to fix this already.
Hello - any time you’d like to send us an example, the developer will have a look.
-Pascal
Hi Pascal,
I was asking what could be causing this.
After moving some control points, re-trimming and re-joining this anomaly disappeared.