Thread:YoshiRocker13/@comment-5888829-20140301092909/@comment-5691231-20140301093421

Chat has been doing this lately - the preview of Live! Chat has often been showing users from hours ago as users who are currently in chat. In fact, this is still going on for me.

I think chat has been fixed though, for the most of it - it seems pretty stable now. I would suggest filing a bug report about it at Special:Contact/bug