For admin, we can drag that button:
For regular users, it disappears and the panel shape is fixed:
As you can see in this screenshot:
The position indicator will say "NaN".
I don't see that break here. What browser are you using?
Edit: Never mind. I do see the break, but only after submitting the post
Never mind. I do see the break, but only after submitting the post. Break confirmed on Chromium, refresh the page and it sows the correct numbers.
My apologies, I didn't mention the error occurred after submitting the reply :).
Testing a reply to break the paginator.
This has been fixed on master.