Jive Messenger 2.2.1 is now url=http://www.jivesoftware.org/messenger/available[/url]. This version includes POP3 authentication, new inline help in the admin console and many bug fixes.
We will soon be releasing an alpha release of 2.3.0 with TLS, SASL and resource binding support. Therefore, this will probably be the last release in the 2.2.x series unless something critical comes up.
Thanks for the bug report. Are you seeing this problem with other pages? I checked the help of each page and client sessions was the only one with the problem. I just checked in a fix so you may want to check the next nightly build.