Board Thread:Support Requests - Getting Technical/@comment-31876814-20180518173915/@comment-9605025-20180522173033

I was told using an ID more than once is bad practice since they are supposed to be used to identify individual elements. Plus, in my personal experience, it is not a reliable behavior. So I think what Fandyllic pointed out would be better.

Godxon, go to your wiki and navigate to MediaWiki:Common.js by editing the URL. If the page doesn't exist, you will have the option to create it. Also make sure that your wiki has the JS review process enabled.