Since I recently gained 2K, and quickly thereafter 3k reputation here on MSE the review queues became accessible to me. Every now and then I check on them to see if there is something that needs reviewing.

When I notice a red icon I'm under the impression that there are a lot of reviews to be done, but every time I get disappointed when after 1 review the queue is empty again. So I decided to look for the logic behind the different states of the review-needed indicator, which led me to this announcement by Jon Ericson. In which there is stated that the default values for the red button are:

Queue                 Default
-----          --------------  
Close                      20
Reopen                      5
Low Quality                 4
Suggested Edits             3
....                      ...

Apparently this isn't the case, so what exactly causes the review-needed indicator to turn red the instant there is a review item?

Secondly, is it desirable that there is always a red flag, instead of the gray flag when there simply is something to review.

Regarding the suggestion that a filter might limit the amount of review tasks available:

In that case there is a message displayed: Message of review queue stating: "There are no items for you to review, matching the filter "[Filter]""

There are no items for you to review, matching the filter "[discussion]"

  • AFAIK the thresholds are adjusted per site, based on the average queue sizes. That table might be outdated ... here is an update on the algorithm.
    – Glorfindel Mod
    Commented Oct 29, 2019 at 10:24
  • 1
    It is also possible that the review queues appear to be empty, when you have a tag filter applied. Then there are no more reviews matching your filter, but the queue is still not empty.
    – Tom
    Commented Oct 29, 2019 at 10:33
  • @Glorfindel that would be the answer I guess.
    – Luuklag
    Commented Oct 29, 2019 at 10:56
  • Sure; if the information in that question fully addresses your question(s), feel free to close it as a duplicate. It took me a while to find the right question, so this is definitely a useful signpost.
    – Glorfindel Mod
    Commented Oct 29, 2019 at 10:57


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