<p>I've recently gained acesses to some review queues, but most of the times there's something to be reviewed (gray dot beside the queue), there's no notification saying so, other times I see a red dot but there's nothing there, as below:</p>

<p>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;  <a href="https://i.stack.imgur.com/SOmo9.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/SOmo9.png" alt="enter image description here"></a></p>

<p>What's the meaning of it?</p>
