Ref T13289. When you create a Phriction document, you currently get an email with the whole new content as a "diff".
You also get extra transactions in the email and on the page.
This is because Phriction isn't on EditEngine and doesn't mark "create" transactions in a modern way. Get them marked properly to fix these obviously-broken behaviors. This can all go away once Phriction switches to EditEngine, although I don't have any particular plans to do that in the immediate future.