If you look here, we can see that for each mesh you add, it adds the mesh to every OctreeBlock:
If you look at addEntry in OctreeBlock, it never actually pushes to the entries of the OctreeBlock. Instead, it calls the _creationFunc, which I guess is expected to push the entries
But, calling addMesh onto Octree recursively loops through every block
Wouldn’t it be really easy to get into a situation where the same Mesh | TransformNode is added to every OctreeBlock in the whole scene? And wouldn’t that negate the performance optimization?