- As a user with the deleterevision right (e.g. sysop group), view history of a page with 2 or more edits. https://www.mediawiki.org/w/index.php?title=Project:Sandbox&action=history
- Tick checkbox of a revision, and press "Change visibility of selected revisions"
- On the action=revisiondelete form, tick at least one checkbox (e.g. "Edit's username")
- Submit form
You're still on the revision delete page and see a "Hiding succeeded" message on top.
You're effectively no longer on the revision delete page. Instead, VisualEditor starts to load, fetches the page and initialises an editor session.
This is most likely due to being on /w/index.php?title=Special:RevisionDelete&action=submit, which VisualEditor might see as the edit page.