The review queue sizes on the /review page on Stack Apps (and maybe other sites as well) are off. When I visit https://stackapps.com/review/ in a private browser window (or while logged in with a sockpuppet), I see that there is 1 item in the Low Quality Posts review queue and 1 in the Suggested Edits queue. Yet when I or my fellow moderator rene view the page while logged in, they are nowhere to be found.
I know that Low Quality Posts are sometimes invalidated for particular users after viewing them, but Suggested Edits ... There are no skipped items in my review history, and the API can't find them either. The last suggested edit is from May 3rd already, so if this is some kind of caching, it's not configured properly.