Board Thread:Support Requests - Getting Technical/@comment-31293812-20190830233036/@comment-168424-20190831000825

How recently?

The offending code is mostly likely in: https://michaelrosen.fandom.com/wiki/MediaWiki:Common.js

The best course is to copy it to another place like: https://michaelrosen.fandom.com/wiki/Plumtopia_-_The_Michael_Rosen_Wiki:Temp.js

Delete all of the code in MediaWiki:Common.js and copy pieces of it back from Temp.js, see if it breaks VE after each restoration... the problem is that you have to go through JS review after each submit, unless you can check VE in test mode (which I doubt).

If I were to guess what is causing the problem, it is either Standard_Edit_Summary or the chunk at the end, UserNameReplace.