Diffs with renames and files that timeout loading don't fully display

When diffs timeout they show the "Oops! You've got a lot of code" warning.

However if the diff includes renames then the files that should be showing the warning display nothing and all files after that file display wrong.

You can see the problem here:
https://bitbucket.org/sgoodhew/large-file-testing/commits/fb3472e

And a slightly different diff (same changes but no renames) that displays correctly here:
https://bitbucket.org/sgoodhew/large-file-testing/commits/433d500