21 people in one room?

I came across a pretty weird thing today. .
You don't need a genius to know that the maximum capacity of a room is 20, right?
Well it turns out that either pico made some kind of typo mistake, or the server screwed up and there were actually 21 people in a room at once.
Check it out --------------------->

Well, after closing the events box and then opening it again, it was back to normal, so I guess it was just an error. It was still pretty interesting :P