Until recently, when I clicked the Cancel button before posting a reply, I would be redirected to the post I was about to reply to (which makes sense).
Now it appears that the behavior of this button has changed: Mostly I am redirected to some other recently viewed page. To return to the original thread, I have to go two steps back in my (Chrome) browser history. This is only a minor inconvenience, but I'm wondering why it has changed.