Edges that both sides are clipped sometimes will not be identified as voronoi neighbor

[UnluckyNinja]

Reproduction: https://observablehq.com/d/3e65ad730f4712fc
Green lines visualize voronoi neighbors, red ones visualize delaunay-only neighbors.
If you change the first 3 parameters, cell 0-4, 1-5, 3-7, 2-6 are no longer neighbors occasionally.
It seems it only happens on both sides clipped edges. Edges that at least one end of it resides in viewbox are fine.

[Fil]

Yes. It happens on

d3-delaunay/src/voronoi.js

Line 154 in 2196b80

*neighbors(i) {

I have also reproduced the issue here: https://observablehq.com/@d3/voronoi-neighbors-137

[UnluckyNinja]

Tried the fixed version from #138 in my notebook. It's consistently and correctly recognized for the clipped edges now.
Very much appreciated.