Why is this one thread stuck on "new?"

Political Consequences if Congress legalized marijuana?

I posted in it, and now it always shows up as new, but there are no new posts in it. Every time I click on it, it takes me to post #18, like that’s the latest post. It’s not. It’s on post #24, at the moment.

It’s only this one thread. Other threads appear to working normally.

It’s happening again, except for more threads.

Yeah…I’m accessing the new ones just by adding (or subtracting) a one from the topic link number.

That one seems to have the most people in it, I’ve found.