Nav tab not highlighting properly
 

I notice that if I create a new navtab (ie. Home - this is after renaming the default Home to 'Forum') and make the URL to the that Home tab to root of my domain (outside of the jailed /forums dir where vb5 is installed)... that the Home tab will always be highlighted by default even when I click on the Forum tab. However, if I create a new page called 'home' (http://www.mydomain/forums/home) and assign that new URL to the Home tab for example... all the tabs highlight fine. Is that a bug, or is some tweaking needed? Am I even making any sense?