(This also applies to MediaWiki:Talkpageheader.)
Steps to replicate the issue (include links if applicable):
- In a test wiki, create the page [[MediaWiki:Subjectpageheader]] (which was added this summer with T151682) with the wikitext content [[Category:All pages]]
- Go to any other subject page (for talk pages, there') in your test wiki. To be safe, you should also try to edit some and create some new ones.
- Finally, visit the category and see which pages it contains
What happens?:
- Every page appears to be categorized into Category:All pages – specifically, the category appears in the bottom category list along with any other categories that are on the page
- However, when you visit the category, the only page that is in it is MediaWiki:Subjectpageheader.
- Bonus: On the MediaWiki:Subjectpageheader page, the category appears in the list on the bottom twice
What should have happened instead?:
- Either the category shouldn't appear in the category list at the bottom of pages, or all pages should actually be categorized.
Other information (browser name/version, screenshots, etc.):
- I created a Patch Demo wiki to demonstrate this. Go here: https://c72ed95331.catalyst.wmcloud.org/wiki/Special:Random