The [**query**][1] given on the 'Top Tags without a Wiki' post can be **up to a week out of date**. The Stack Exchange Data Explorer from which the query is run **isn't** updated in realtime. 

If you click on the tags in the query, it will take you to the Arqade page for that tag:

[![Clicking on tags][3]][3]

[![Mortal Kombat X's tag wiki][4]][4]

Which **will** show an updated wiki in realtime. This is how I check when adding new tags to the answer.

I doubt there's any malice here, just a simple misunderstanding. I've edited in a warning to the [post][2] in question, hopefully in future, situations like this one will not crop up as often.


  [1]: http://data.stackexchange.com/gaming/query/128381/top-tags-without-excerpts
  [2]: http://meta.gaming.stackexchange.com/a/1595/28182
  [3]: https://i.sstatic.net/MtAlX.png
  [4]: https://i.sstatic.net/R3K9q.png