Thread:Mendes2/@comment-24714052-20201030124146/@comment-25014407-20201030125133

The category is not used on Community Central and has no place here. If you want to play with or test categories, you can use your own wiki for exactly that purpose. Recently, we have been using some cleanup in terms of unused pages and categories, and that was one of the impacted pages. There are plenty of pages (including sandboxes) that create random categories that are never cleaned up, so we are now looking into those. If there is a specific feature or template that broke, you can try to use the feeds (for non-wikitext help) or Forum:Index (for wikitext help) to find solutions or alternatives from other users.