While joking about the possibility to have a chat description so long that it would push the starboard offscreen, I actually noticed that the room info/description field seems to have a max length.
If you exceed that length an error is thrown (redirected to the generic chat error page). Now, I am not particularly worried about the error page, everyone should easily recognize what went wrong. The point is that the error page is suggesting that the error creates an automatic alert for the developers at Stack.
I think it may be worthy to add a check on the original page so that the error isn't thrown and we don't generate unneeded alerts.