Board Thread:Watercooler/@comment-1676371-20180929175053/@comment-27345308-20180929213629

Actually, the page does matter. If the page is using a class made collapsible by ShowHide, the warning is displayed. It is also displayed across Template and MediaWiki namespaces. Clicking on the X button dismisses the notification for six months, and the warning is only displayed to administrators and content moderators. Can you link to any article namespace page where it's displaying for you?