Yeah I think I misinterpreted a little from your initial post.
Do you have any backface to the mesh? Looks like the mesh has some backlighting on it, but really hard to be sure without knowing all the lighting setups here for the composition of the scene, more about the mesh in question vs the difference with others in regards to its construction.
If it’s really only happening with this mesh it may be better to upload it here and I can have a look to see if anything stands out that is wrong.