Openfire is sending a an empty stanza

Hi there,

Recently I have found out that when I am on the Sessions page in Openfire and refresh the page an empty packet is sent to all of the clients, is there a way to stop this behavior from Openfire settings?
Currently I am using Openfire version 4.1.3.
If this behavior is not controlled by Openfire settings and it is a bug, is it fixed in the latest Openfire version (4.2.3)?

Regards