When trying to use Review Coverage Report for a given repository, for example:
http://localhost:8060/plugins/servlet/review-coverage/SVN
On the bottom right report for Changeset the first colon has a expansion arrow before the revision id which does not work:
Using the Chrome debugger I can see that it tries to run a query and fails. This probably has to do with jQuery library.
I cannot reproduce this on 4.2.0, neither with SVN nor git repository. Please re-open if this is still an issue.