I recently upgraded to Apache 2.4.20 on FreeBSD and up until this update, everything has been working great with mod_status.
However since the upgrade, unless an action is taking place (sending reply, closing connection, etc), the Client / Protocol / Vhost / Request columns are completely blank. Before upgrading to 2.4.20, those columns would show the last request information. Now when the action is finished, those 4 columns are blanked out.
I have not made any changes to my configuration file(s) or upgraded anything else on my system. I just updated to the latest version of Apache 2.4 - and that's it.
I really hope that this is a bug and not "now working as intended".
Ken