Fatten Grasshopper - Vertical line not getting fatten

Grasshopper
1

Hi, I am trying to use the fatten command in Grasshopper under mesh>primitive>fatten>.
But the command is not working on vertical lines. All other lines are getting fatten but only the vertical lines are not getting fatten. Kindly help me with the issue. I am using Rhino 7.
I have attached the screenshot for reference.

Fatten Grashopper
Fatten Grashopper1920×1040 227 KB

Fatten.3dm (36.2 KB)
Fatten.gh (5.4 KB)

2

Have you tried Multipipe?

3

Hello,
Thanks for the reply.
The Multipipe is working fine.
If I give even a bit of angle to the vertical line fatten is working. It’s not working with exact vertical lines only. I want to know how it can shorted out.
Thanks.