Actually I believe it's Comet, not come to.
And it seems some changes were made, from what I can tell. The alerts don't seem to function well, anymore. And getting it to register messages as read doesn't work well either.
The alert issue is newer though, and at first it worked fine.
I haven't experienced a blown up size on the chat. Perhaps double check your browser when the page is open and make sure you didn't accidentally zoom in on it.