A few days ago, I noticed the "Top tags requiring a wiki" question. For those unfamiliar, it is an old post, directing users to update the wiki for popular tags.
In the answer, there is a useful list of the "Top 20", with a link to the query used to determine the 20 most used tags that do not have wiki excerpts.
After adding a few excerpts, and seeing they were approved, I ran the query and updated the list. I since noticed another user adding back in the tags I had completed, and removing other tags, that I confirmed to have no wiki. I rolled back the edit, and left a comment explaining my actions.
I have gone back in, today, having pushed a wiki to the mortal-kombat-x tag. I click on the query, and I click "Run Query", confirming I am a human with a Capthca.
However, the query still shows tags that have wikis. In fact, the supposed "top 2" are ff-record-keeper and mortal-kombat-x. I added these both, myself. I have since been awarded reputation for the approvals, and there is no comment on either wiki to note that they are still awaiting approval.
Am I missing something that I potentially lucked out on, the first time? Or is there a different reason this query is no longer returning accurate data?