From the HOME page or Portal, it is showing recent or new post and takes you directly the latest post.
If you are in the FORUM pages, you can browse the categories and when you click the link it takes you to the first post in the topic. If you click the "New" button, it takes you to the latest post that you havent read. So if you havent read any of the post before, it goes to the first one.
Hope that helps.