I have never liked through-the-web editing of HTML content, in part because I've been using Emacs for 30+ years and its behavior is burned into my brain. (Not just a few keybindings either.)
I thought, "No problem." I'll just grab the <tagged> source from the edit window, run tidy over it to make it look, well, tidy, then have at it in Emacs. That didn't work so well. Tidy doesn't like that content. It doesn't appear to be complete (macro tags like <ac:structured-macro> are unknown), so it refuses to mess with it. It's unlikely that editing a copy of the actual page source will work either.
For now, I can make do with manually reflowing <p> and <li> tags. Is there some reasonable way to edit page content using an external editor?