I just replied to a post (using the reply link in that post)
on page 2 of a 3 page thread.
My post with the quote was placed at the bottom of page 2 when I pressed submit and the page counter at bottom of thread indicated page 2 even though my post technically is the last post on page 3.
When I advanced to page 3, my post was there. Just a bit odd initial behavior that was a little disorienting.