None of the faces share an edge with other faces. At least their index is different.
I was trying to find near faces to a face by looking at the three edges, and testing all other faces. Is my code broken?
MeshDataTool. Faces do not seem to share same edge index
I was using gltf runtime load addon
https://github.com/V-Sekai/godot-gltf-module/tree/gdnative
Somewhere I have duplicate vertices. Faces have their own individual vertices. And many vertices share same origin.