interpolation results in an incomplete mesh

[Bruno Andrieu]

Hello

I repeteadly obtain incomplete meshes when using interpolation (defaut) compared to no interpolation.
This is whatever the number of cameras or the visual quality of the point cloud.
I am working with plants, meaning thin objects (leaves)

I attached two captures showing meshes built from the same point cloud; only difference is enabling or not interpolation.

Any hint ?
thx