Severe bug with some types of Prefabs/meshes

[_Aka_]

However, I want to make mention, if I had a standard cube into the gameobject then it works, then the generation of tangents seems to succeed which is very worrisome because I don't know why it works when a cube is added.

That's probably because the cube has tangents, and the mesh combination step in the deform mesh module will auto-compute the tangents if it sees that tangents are partially present. Regardless, my fix should make this irrelevant.