List of Links in a shell


I have a custon shell using Noodle Shell parent. I put a list of links component (Portlet->Content Management) in the shell header. I set OPen in a new window metadate attribut to yes. When I click on one of the link, I’m redirecting to the url I specify but not in a new window. If I put the same control in a page instead of a shell header it’s works perfectly. Why ??