help in figuring out how human_seg dataset was created

[nodejk]

original dataset, given here: https://github.com/Haggaim/ToricCNN.

for FemaleFitA_tri_fixed: faces: 25K and vertices: 12.8K

using blender_process.py on it with target faces as 1500, it generates the following broken mesh:

can't figure out why it is.