I would check the error.log file for errors.Did you have a module compile on on the previous version that is not in 2.4.20?Also inspect the web page, by right clicking on the empty spot and choose inspect then refresh your page and see what RED errors you get in the console if any.
Sent from my iPhoneI 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.Here is a screenshot : http://i67.tinypic.com/21kgncl.pngI really hope that this is a bug and not "now working as intended".Ken