Paraview started showing surface roughness, not sure how it happened or what metric is being used

[mwestphal (Mathieu Westphal (Kitware))]

@ZhangxiFeng

this deformed coordinates for better visualization of cell data

But it is not deformed. This is where the data is in your file itself.

I cant test old version of ParaView rn, so you will have to test that on your side.