Sims beard not growing properly when having the growing feature enabled.

I have been experiencing this (bug?) for a while now and I do not know if I am doing something wrong. When I choose a beard for my sims and enable the option for it to grow, nothing happens. The beard never grows and when I enter CAS again, the "preferred style" is the default and not the one I chose. It is true that I have some CC beards but I have tried to play without mods and the issue is still there. Thanks in advance.