Board Thread:Ask the Staff/@comment-5250721-20160929044335/@comment-5956954-20160929050923

If you mean you went from a wiki that has the auto-refresh feature, then went to a wiki that doesn't have one, then that is because the wiki does not have that script on their MediaWiki:ImportJS or MediaWiki:common.js / etc. page.

It will never disappear if this script is imported into your global.js, though, since it will become a personally loaded script.

If you mean something else, then an error might have occurred when you tried to edit the js page.

Either way, I hope this answers your question.