Well yeah, the point of that widget is not to show recent activity in general, that's what the /recent page is for. This is just meant to show recent topics, which is why is goes to post 1.
Topics not showing after clicking Back button
I noticed that on this site sometimes if I view a topic and then click the browser's (chrome) back button to go back to the category page, the list of topics doesn't show up on that category page. I still see all the stuff surround ingit like the New Topic button but the list of topics itself is not there anymore.
Can you reproduce this reliably anywhere?