Sketch command OnSurface buglet

Hi there,

i’ve found a small bug using the OnSurface option in the _Sketch command:

  1. create a nurbs sphere
  2. start the command, click on option OnSurface
  3. pick the sphere and sketch some curves
  4. exit command

if you now look at the back side of the moon sphere, the sketched curves have been added on both sides. This happens in Rhino 7 and 8 (windows).

thanks,
c.

I see that here as well-

bug report here-
https://mcneel.myjetbrains.com/youtrack/issue/RH-74752/Sketch-on-surface-projects-to-back-of-a-sphere.

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