In the handbook's (https://www.freebsd.org/doc/en_US.ISO8859-1/books/handbook/using-localization.html#locale-lang-country) section 220.127.116.11. Login Classes Method, we have:
Whenever /etc/login.conf is edited, remember to execute the following command to update the capability database:
# cap_mkdb /etc/login.conf
But in login.conf(5) for FreeBSD 12X we have:
The default /etc/login.conf shipped with FreeBSD is an out of the box
configuration. Whenever changes to this, or the user's ~/.login_conf,
file are made, the modifications will not be picked up until cap_mkdb(1)
is used to compile the file into a database.
The wording in the handbook can be easily interpreted to imply that cap_mkdb(1) need only be used when /etc/.login_conf is modified. But this is not the case - as can be seen from login.conf(5). I request that the handbook includes that cap_mkdb(1) needs to be used even when ~/.login_conf is modified.