Event does not exist chat spam

I know there's tons more important glitches to get fixed, but this one was [Bug]ging me today and yesterday.

I had been playing with the Menu >Arena as an alternative to physically going to the arena.
Set up my gladiators, and formed a match.
I invited my rival to the match. but then managed to crash to desktop.
When I came back(stopped for diner while my files reverified), i had a constant spam in my main chat window of "Event does not exist".
Every couple seconds I was logged in, i got that message.


Finally figured it out, and got rid of the spam... but it was annoying that I HAD to.
The method to rid myself of the message was, join a different, existing, arena match.
My client thought it was still trying to join the match, and the server had already wiped it from memory:-(

Yeah, recently did some Arena matches with a badge-seeking friend and saw this "Event does not exist" spam when trying to join our matches. Very annoying. Seems like a silly bug that while not making the Arena 'broken', does make it feel like it's still in beta.