I think we only discussed the availability of various beam faces on the CalculiX forum when talking about section print: How to print the section moment (SOM) at the section on a 1D beam (B32)? - CalculiX (official versions are on www.calculix.de, the official GitHub repository is at https://github.com/Dhondtguido/CalculiX).
When it comes to interior face handling by PrePoMax, here’s the related discussion: A new PrePoMax version v2.4.0 has been released - #6 by Matej