Bug "Show More"

The "Show More" button doesn't seem to work in any browser I've tried. Opera, Firefox and Chrome. When I click on the button it just shows multiples of some posts. I disabled script and adblocking where appropriate and that doesn't seem to help either.

Also it seems as though some threads just disappear no matter how the thread is sorted once that thread hits a certain number of replies. Neither choosing recent or popular seems to change this. I have a post that wasn't deleted but isn't showing up in the thread either way it's sorted.

edit: I've found clicking on the link in my profile makes the comment show up but if you just go to the parent thread and sort it the comment is missing.