Nostalrius Begins - Quality wow vanilla realm (1.12)

Hey!

Quite often when i log on i cant use the chats (like typing /1 bla bla).
When i do so all i get a "type /command for a full list of commands" message.
Any tips?
This does not happen every time, but most times i log on. Quite annoying to have to relog 10 times just to be able to use the chats...

cheers

I get this occasionally, but if I leave the channel and rejoin it, then it starts working again.