Forking (cloning) this bug from bug 11586, as bug 11586 was marked as invalid.
The underlying issue here is that on sites such as https://en.wikinews.org/ there is an "Opinions" tab on individual news articles that leads to a Comments namespace page for each article. For example, https://en.wikinews.org/wiki/Israel_launches_airstrikes_against_Gaza_Strip,_kills_Hamas_commander has an "Opinions" tab at the top of the page that leads to https://en.wikinews.org/wiki/Comments:Israel_launches_airstrikes_against_Gaza_Strip%2C_kills_Hamas_commander.
I'm marking this bug as "easy" as it really shouldn't be more than an hour's worth of work to get this extension fixed up and ready for review and deployment. If anyone is looking to get his or her name on "Special:Version", this is your chance!
Source code is here: https://gerrit.wikimedia.org/r/gitweb?p=mediawiki/extensions/CommentPages.git;a=summary.