Saw it in another thread, which reminded me why the arrow back in the top left is driving me crazy. An easier way to get out of a long thread would be nice
The way this is set up is you click the name of the forum in the "breadcrumbs" above and below the posts to go back to the thread listing. Not as obvious as a "back to topics" button but let me know if you think that serves the same purpose once you get the navigational flow.