I think it has been like this for a while now
I swear, my Updated Topics page got reset recently and started from zero. Hasn't yours reset? Can you click and tell me if you see many pages with topics you haven't replied since last year?
As for this part, is there a chance it gets cleared if you clear your browser cache?
I didn't clear my browser cache. It just got reset out of nowhere.
What do you mean by "reset"? I sometimes accidentally click it, and that list has always been very long.
What does a Brand New member with no posts see when clicking that page? That's what I saw, until I got new replies in threads like Wall Observer, which made them appear again.