There is a "Learn more" link available on all the review queue pages, clicking on it opens a popup with that review queue's information.
That "Learn more" link is responding in the "Review tasks" tab only. If we are navigating to Stats or History tab, the link is not responding.
As an example I linked the Close vote review queue, but the issue exists for all the review queues.
Either enable the popup for the Stats and History tabs, or remove the "Learn more" link line for those two tabs.
Sample screenshot of Close votes review queue popup:
