I've also been wondering about that panel. It appears to only take up space, and is entirely inconvenient and distracting. At first, I thought it could be a "related topics" section which would help users jump from one thread to another. The image you've provided, however, shows that the threads have nothing in common. I'm not so sure what "also tagged with Report" means.
Whatever it may be, it needs to go.
You can tag topics when you create them, so the OP of all those threads tagged them as a "report."
But I agree, I dislike that feature as well.