Board Thread:Support Requests - Getting Technical/@comment-5961377-20160116052905/@comment-5961377-20160122114254

Yes, there seems to be one related to it:

load.php?lang=en&mode=articles&articles=MediaWiki%3AChat.js|User%3AGameuser10%2Fchat.js&only=scripts:5 Uncaught ReferenceError: mainRoom is not defined

Although I could have sworn it was always there before.