Possible Bug - Weird Model Behaviour

[pavol]

Polyline culled form the list might be an issue related to list order, see following forum posts:

Geometry on Shapediver is different from the Rhino

This is a common problem where a list order varies from computer to computer or between Grasshopper version as the tolerances and other factors may have affected the order of your lists. In order to keep the order stable and predictable, you have to create a geometrical or mathematical check and sort the list accordingly. More in this tutorial or video below:

Hole in model becomes solid in Shapediver

Things can go wrong if you use Deconstruct Brep and similar components as the resulting element list order may vary between computers as explained in this blog post or tutorial below: This video can also give you some ideas how to build your model in more reliable and efficient way:

If this is not the case, please share a minimal version of your definition replicating this and we will have a look.

When it comes to model loading and acting funny, do you get any errors in the browser console? Please share screenshots if you do.