[Bug] Offset creates additional curve segments?

Serengeti (Rhino WIP)
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1

In the WIP, I encountered something strange: when I offset a particular curve and explode it, it creates additional segments in Grasshopper.

And it also does so in Rhino:

Note that this only happens in the WIP (9.0.25084.12305, 2025-03-25), Rhino 8 is unaffected.
Offset bug.3dm (64.1 KB)
Offset bug.gh (9.0 KB)

3

Hi, sorry about that. It was a regression I introduced when working on open curve trimming in Rhino 9. I opened RH-87019 to get this resolved.

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