What version are you running?
RB 2.0
What's the URL of the page containing the problem?
https://reviews.reviewboard.org/r/5846/diff/#
What steps will reproduce the problem?
When I hover on a link to a specific file in the diffstat box, for example "reviewboard/diffviewer/tests.py", the url preview properly shows "https://reviews.reviewboard.org/r/5846/diff/#2", however when I click, the firefox (29.0.1, linux) URL bar said "https://reviews.reviewboard.org/r/5846/diff/#".
When I want to paste someone a link leading to a specific section inside the diff, it wouldn't work without me manually fixing the link address.
Additionally, the linked file is not shown on top of the page, but a bit below. IMO the file should be scrolled to the very top (see screenshot, (its not the same RR as linked in the ticket here)).