When you are at the new "portal" instead of the forums, there is a site navigation area on the left. Clicking the forums in the site navigation links bring you right back to the portal instead of to the forums.
The url of the forums link in site navigation is (takes you to the portal, merely reloading the page):
Clicking the forums in the upper left where it says "Forums > Portal" does work.
clicking forums further up and left takes you to (properly):