This has never happened to me before but a face split when I meshed it. I am not sure why can someone explain. The only things that are different than usual is that the part is very small and the fineness was very high. Location: (.7, 1.4, .15). There is also a prob point near the location.
Simulation Link
Hi @cyrus_costa, if I were to guess, this is most likely due to your small feature suppression having been set to a higher value than the CAD’s feature - which got it suppressed.
If you were to go for 1e-3 or 5e-4, I would expect the suppression not to happen.
Cheers
Igor