Yes, there are three things you need to change:
1. The bounding curve must be a *convex* polyline, as it is a voronoi cell itself.
2. Right click the last BBox component and change it to "Union Box". That box is the…"
Thanks for contributing your thoughts on GH pain points. I'd like to invite you to an alpha test list for Flux's upcoming product, which is hoping to address some of the issues you are having. Would be great to get your feedback. Please email me at firstname.lastname@example.org if you are interested.