**Steps to replicate the issue** (include links if applicable):
* Visit https://en.wikipedia.org/wiki/Category:Candidates_for_speedy_deletion
* Click on some of the the subcategories such as "Hoaxes"
* Note how many pages are currently in the category by manually counting the pages listed
* Go back to the parent category at https://en.wikipedia.org/wiki/Category:Candidates_for_speedy_deletion
* Note the count. Some of the counts will be wrong.
* Purge the parent category
**What happens?**:
* Subcategory counts don't update when viewing the parent category
**What should have happened instead?**:
* Subcategory counts should update
**Software version** (skip for WMF-hosted wikis like Wikipedia):
**Other information** (browser name/version, screenshots, etc.):
* Purging the subcategory doesn't work either
* I assume you'd have to null edit some of the subcategory pages to force this update?
* Is there a way we can just have purging the parent category update this instead? Maybe with some kind of timeout or subcategory limit or something to keep it from being too expensive?