Thread:Project:Support desk/External link opens in new window on request but not always :-(

Hello All,

I installed the LaunchExternal extension in my Wiki, and now any URL in a text opens in a new window, BUT the one to MediaWiki. How come ?

Example:

In this page link to Forum de discussions et d'informations does open in a new window, but in that page (4th §), link to MediaWiki does not :-(

Config is

MediaWiki 1.24.1 PHP	 5.5.11 (apache2handler) MySQL	 5.0.67-log

Thanks.