New Posts page back button

When viewing the new posts page and clcking "more" if you view a post in "more" and click to go back it takes tyou back to the start of the new posts that you have already read and have to scroll down to the bottom and click "more" again and then find the spot you were previously looking at. Very frustrating.
 
Similarly, if you create a new post then close the page (tab) then re-open it, the new post isn't there. (I feel there are other examples which I can't think of just now)

- So it seems the site is modifying pages on the fly, but keeping secret about it to the browser...