If I view a side-by-side diff like this:  and then return to the repo landing page, it looks like this:  when I refresh the page, it's all right again:  This is on Chrome 34.0.1847.116, OS X 10.9.3.
If I view a side-by-side diff like this:

and then return to the repo landing page, it looks like this:

when I refresh the page, it's all right again:

This is on Chrome 34.0.1847.116, OS X 10.9.3.