I can't believe I'm having to ask for this but here we are (currently very frustrated). We NEED undo/redo buttons within the blog app.
According to Wix support whom I've been on the phone to for over 30mins, it is impossible to undo while editing so, if like me you accidentally delete a whole chunk of your work, there is no undo button to retrieve it. No, ctrl+z does not work. Yes, in the editing phase of a blog app.
Wix support say there is no way to access a previous version of your unpublished post and although it has been escalated to a specialist team, there is little hope of retrieval. Undoing an error shouldn't be this complicated and there's a very simple fix - undo/redo buttons.