I have been scratching my head for a while over this and wondered what I am missing.
I have the following come up when I am in cogsci.stackechange.com
As you can see, there is a '5' which when hovered over, tells me there are 5 posts awaiting review. When I click on it, there are no posts awaiting review, yet the 5 stays there. Clicking on Meta Reviews leads to no reviews waiting and the 5 disappears until I go back into cogsci.stackexchange.com.
The 5 has been higher in the past, which makes me wonder, am I missing something?