PDF.js uses github issue tracking, but also has a Firefox component. The "See Also" field currently only accepts links to other bugzilla instances, or google code/debian/launchpad. It would be useful if it also accepted links to github issues (e.g. https://github.com/mozilla/pdf.js/issues/1309 ). I don't know whether this is a configuration issue or whether it should be filed upstream.

(In reply to Gavin Sharp (use gavin@gavinsharp.com for email) from comment #0) > I don't know whether this is a configuration issue or whether it should be > filed upstream. It has already been filed upstream, see bug 704999.