As of this morning after the screen promoting the "recommend" button popped up, using the "back" or "forward" arrow to return to the message index goes to an old version of the page, not what was just refreshed and viewed. And the old version of the page is not one that I have viewed on iPhone but an older one from a point in time yesterday that I was not using my phone to read the board and could not have saved it anywhere. I have tried logging out and back in, closing and reopening the browser, and resetting my phone, and it persists. Screen shots of the version of the Cheese board and SF Bay Area board that continue to display on navigating back and forward even after viewing refreshed versions of those boards are uploaded.
ETA: My screenshot as of less than an hour ago shows the Corned Beef thread on the SFBA board with 30 posts as of 9 hours ago. The current status is 31 posts as of 1 day ago.
ETA: The other difference between the old version and current is that there are no ads on the top of the page on the old versions.