Thread:Project:Support desk/Tab, button and some link titles do not display properly on pages

We are in the process of migrating from MW version 1.15.4 to MW 1.24.1 on a CentOS 5.11 system. We are using PHP 5.4.36 and MySQL 5.0.95. The link to our site is developer.safetyanalyst.org/aashto/index.php/AASHTOWare_Safety_Analyst. Access to this site can be obtained by using 'guest' user name and no password. We have updated all extensions and we are using the MonoBook skin. The site works fine in MW 1.15.4.

In MW 1.24.1, most everything appears to be working fine except that the tab, button, and some link titles are not rendering properly. For example, the view source tab title appears as '&lt:viewsource&gt:' rather than "view source" (the colons are actually semicolons, but I did not want them translated). Also the "page" tab does not display a title. What have we missed?