The winding order of the faces changes when flipping the faces. This lead to the loop indices changing as well. Now we take this into account when restoring and flipping the custom normals. Before the normals would be swapped.
The winding order of the faces changes when flipping the faces. This lead to the loop indices changing as well. Now we take this into account when restoring and flipping the custom normals. Before the normals would be swapped.