Hi Danny,

> There is also a problem with this surface that doesn't help the situation.

Yeah I noticed that too, often something that looks like that may have a kind of messy jumble of points in the pole area rather than a clean single shared point.

But this surface is not like that, it is actually ok and instead that is a bug in the surface normal calculation which happens in the current v2 beta for things that are a little ways from the origin. But that is already fixed up for the next release.

- Michael