After a video finishes playing in TimedMediaHandler's pop-up player, it shows links for both the title and author. The links are valid, but for some reason clicking on them doesn't work (in Firefox at least). There must be some Javascript hijacking the click action and preventing it from working.
For an example, go to https://en.wikipedia.org/wiki/American_sign_language and click on the first video.
Version: unspecified
Severity: major