3605: Reviewboard displays or ignores lines restored after deleting incorrectly

glin****@dynamicco********** (Google Code) (Is this you? Claim this profile.)
What version are you running?

What's the URL of the page containing the problem?

What steps will reproduce the problem?
1. delete a few lines from a file
2. add the diff to Reviewboard
3. publish the review
4. restore the deleted lines with a few small changes to the lines
5. add the updated diff to Reviewboard

What is the expected output? What do you see instead?
When I look at the changes between revision 1 and revision 2, I expect to see the restored lines as a change, but instead, Reviewboard shows no changes. If I expand the file, I do see the differences but they are not marked as changes by Reviewboard.

What operating system are you using? What browser?
$ uname -a
Linux 3.13.0-35-generic #62-Ubuntu SMP Fri Aug 15 01:58:42 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux
Google Chrome Version 36.0.1985.125

Please provide any additional information below.