There is no way to undo an item in the body section of an article. Ctrl + Z does NOT work.

Given the user cannot save while they are editing, there is a risk users will accidentally lose large volumes of work by accidentally selecting / deleting paragraphs etc.

Is there a way of supporting some form of undo (either via short cut or other means).

EDIT:
The undo issue seems to be verified if we hit delete or backspace in body field of article.
Also, sometimes cannot undo after you paste in content (particularly if it is multiple paragraphs).