Lately we've been getting a number of re-open candidates. Some of were last active as far back as two years. In some cases, the last edit that was made to them is what's referenced as the reason it's been added as a re-open review task, even when the last edit was more than a year ago.
Other strangeness is stuff like the re-open queue showing 30+ items to review, then only 3 items are reviewed before you're done and the review queue is empty.
Also, questions are showing up multiple times over the course of a few days:
So, all kinds of bugs here.