Case study: [https://en.wikipedia.org/w/index.php?title=Janina_Oyrzanowska-Poplewska&diff=956138839&oldid=956079082&diffmode=source]. After that edit converted all citations in the article to use template sfn Visual editor no longer can edit the citations; worse, it doesn't even recognize them as such so they don't even appear for re-use in the citation re-use window.