The update to chat earlier today appears to have broken the wrapping behavior of long posts that don't contain spaces.
For example:
Earlier today, when this message was sent, it wrapped. Now, it does not. It overflows into the sidebar and beyond, giving the page a horizontal scrollbar.
The extra width on the chat page also makes the new reply snippet behave oddly: when you click to go to the replied-to post, the page scrolls horizontally to put the post itself on the left margin, cutting off the usernames column on the left side.
The same overflow happens on the transcript page:
Tested in Firefox.
