Yes, that's a fairly common occurrence. Usually, when you get bumped like that, you can hit refresh and if you swing a chicken over your head while singing Inna Gadda da Vida, it may jumpstart it. More often than not, I need to open a different browser to get back in. It seems to be worse when the room is full.
Other times it just picks on certain people, and will bump the same person off time and time again - very frustrating when you are the chosen one. When you are trying to leave the room, it tends to lock up, also.
We love it though, quirky as it is.