Crash on extendsrf after offsetsrf

Rhino
1
  1. Extract the green surfaces
  2. Join them
  3. Offset them by 2mm
  4. Try to extend the indicated edge

image
image805×641 55.4 KB

Rhino 8 SR13 will get as far as the above and then crash to desktop.

crash-after-offset-on-extend.3dm (123.6 KB)

(Yes, I know I should have exploded them first unfortunately, but imo the crash is bad enough, but that Rhino pretends that this can work by allowing a selection and drawing a partial preview is almost worse.)

2

I extracted, joined, offset, then exploded just as a sanity check… and the surfaces vanished completely after changing into a wireframe representation! :slight_smile:

I am in Rhino 8 SR12.