Board Thread:General Discussion/@comment-81.157.18.175-20200307163703/@comment-9605025-20200307175710

This is not a standard feature. The details of how it works may be wiki-specific. However, I can say that FANDOM has a track record of ruling that such warnings cannot cover the entire page. If the previous warning style did so, then it is likely staff contacted the local admins and asked them to change it.