http://i.imgur.com/pNzNf.jpg i was having some trouble earlier this morning talking to blatca. the herochat was saying no1 was there but the picture shows the truth. after taking this picture. blatca left to eat. and once he left. hero chat fixed itself somehow. the message never popped up again as i takled with ant. blatca's black magic.
I think its staff hax, so when they go invisible to watch someone so they can't be found out someone chatting in local when nobody is near maybe not, but its still call hax!
Something similar actually happened to me earlier. I was trying to talk to someone in local, but neither local nor /tell would work. I sent a mod request, and when nray arrived, everything worked just fine. However, when he left, the same problem occurred with the previous person and I. Even after relog and complete minecraft restart, the problem persisted. It's perfectly fine now, so I'm not sure what was up before.