I had made the chat area as small as possible and then clicked the popout button to remove it from the main layout completely, but it keeps reappearing in the broken form shown below. I can make it popout again, but it'll just reappear later. It just appears on its own while I'm watching the video. Note that the popout chat works fine, but the one shown in the picture doesn't work at all.
OS: Windows 8
Browser: Google Chrome Version 26.0.1410.64 m
EDIT: By the way, I just noticed my adblocker is active on the site. I'm usually yearly premium so I hadn't noticed that Giant Bomb wasn't on my whitelist! Rectified now ;)