I'm on a Kindle Fire, Silk browser, Android platform.
This doesn't happen when scrolling through the main board or on a single topic discussion. Only when scrolling through the post list on a topic board (like home cooking). I can scroll through 3 'boards' before it starts looping, usually back to the beginning of the second board. Because of the looping,I can't read posts as far back as I sometimes want.
Reloading the page or backing out to the main page and then getting back into the affected board does not help. It also does not happen on all boards all the time. It also only happens on the Kindle, not on my laptop. I don't access Chow on my phone, so I can't speak to that.