Can Curve Spline be used for an in game level editor.

[_Aka_]

I've created a simple package with just 1 scene, 1 prefab. No scripts or anything. I didn't include Curvy either to avoid breaking the law.

You can see here that I have the generator added to the spline, rather then the spline added to the generator (like the default behavior when creating a generator and a spline input)
This is so I could share 1 spline across many generators.

I was able to reproduce the issue. Working on it.

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Side request, is it possible to zoom in the Generator graph? And if not, is that functionality possibly able to be added?

Not possible at the time being. It is something that I am intending at adding at some point. I can't give an ETA right now.