User blog comment:Rappy 4187/Technical Update: May 13, 2015/@comment-24200411-20150514032217

Yep, it appears this update has broken the chat once again...

To anyone who might be raging and refreshing, it would probably be best to go do something else till this is resolved. It'll probably take them a bit to fix this, and I don't see the chat being down all night.