So this is the second super-obscure layout "bug" I've found. When one looks at the revision history of a question on SO, the headers normally look like this:
However, if the edit description goes onto a second line, the "view source" link is pushed down a bit too much - it doesn't look like the header expands enough (it's ever-so-slightly bigger) or adds a buffer to account for the extra line:
This is all monumentally unimportant in the grand scheme of things, but I figured I might as well mention it.
(This was viewed with Firefox 4 on Windows.)