I just upgraded my project from 2018.3.14f1 to 2019.3.0f1. I had a function using “MeshFilter.mesh.SetVertices()” so I can change the mesh in runtime.
This is the original mesh:

This is what I achieved in 2018.3:
This is what it becomes in 2019.3:
I didn’t change any setting in the fbx in both version. Anyone has idea what has been changed since 2018.3 related to index order or something?

