UV Editor creating non-uniform UV meshes

Hello, I am trying to UV map a nurbs model and whenever I try to edit the UV map, Rhino creates visual errors. It happens on pretty much all geometry I create. For example, if I UV map a spherical nurbs model with the spherical UV mapping tool, the UV maps look correct. As soon as I use the UV Editor, the UV map then has visual errors. See video below as an example. Is there any way to fix this issue?