I've found another minor issue, reproduced on the demo site (https://demo.mojoportal.com/new-page).
Editing inline does not update the "Modified by" property of HTML Content. It does appear to update the date. The entries in the "Previous Versions" history are similarly wrongly attributed, perhaps to the user who first created the content (I've not exhaustively tested the illogic here).
This is without Content Workflow, but I've seen the same issue on a site with this switched on.
PS totally unrelated... logging in on this site with a Windows Live account seems to have been broken for a while. This time, the popup appeared where normally I have to re-confirm for the Nth time that I am happy to share information for 1 year (grr!), but instead it said:
Allow Access
There's a problem with the site you are trying to share your information with. Please try again later.