Hello. Thanks for the feedback. I have a few assumptions about your problem. The vertices are read from the original geometry and if the mesh has been changed, for example with the shader, then we will see one thing with our eyes and the tool another. Also, a similar discrepancy is possible on skeletal meshes, since the vertices are read from the T pose. If your case does not match the described ones, I would be grateful if you could send an archive with a project with a problematic geometry. Thanks.