I've looked at some older threads and sometimes they end up looking like the following:
or http://i.imgur.com/NCZFyKr.png if the image isn't big enough.
I've refreshed the browser(safari) multiple times and it showed up the same way every time. I think the bug might be caused from the move from Marriland to Curse, because only older posts do that, at least, for me.
Not sure why that happens. Do you have an iPad or any other device? Try it with that. But yeah, it doesn't happen to me.