Currently I've faced this issue. on Hinduism.SE I see 1 suggested pending approval:
But clicking on which the page says:
This queue has been cleared! If you're looking for more to review, view all review queues.
Also review page says 0 suggested edits:
Note that this is not issue that before I clicked on 1, there was one suggested edit pending and when I clicked, it is already reviewed. Because I've reloaded page many times, even after 10 minutes I'm still getting 1 notification on top bar in spite of there is not any pending suggested edit approval.