Thread:452/@comment-5578690-20150125210118/@comment-452-20150125213158

Clicking remove then delete does remove it from the wall, but it doesn't prevent it from being viewed via other means:

http://452test.wikia.com/wiki/Thread:Dartmaster8/@comment-452-20150125212757?diff=prev&oldid=4405

Apart from viewing it this way, it is also included in the database dump.

edit: and the solution is for an admin to go to: http://452test.wikia.com/wiki/Thread:Dartmaster8/@comment-452-20150125212757?action=delete

Deleting the url using AjaxBatchDelete works also.

edit: In case you're wondering, this does not occur with blog/article comments, because blog/articles comments are more closely build on mediawiki's existing mechanics - when you delete a blog comment, it is deleted the same way as deleting any other page, instead of just being "hidden" as it is with the thread system.

edit: This same thing causes red links in "deleted" threads to appear on Special:WantedPages - something which I first reported on 2012-01-31, so they've known about this issue for almost 3 years.

edit: Whenever I report a problem involving one of these urls to Wikia Staff, their usual response is "What?! How did you find that URL? We have no idea how our website works!" (I'm paraphrasing)

So, since that question may cross your mind:
 * Go to http://452test.wikia.com/wiki/Special:Contributions/452
 * Click on the date (or diff) of any of my edits to that thread.