I enter an upper case I in my draft. When published it appears lower case. I go back to the draft and it's upper case there.
Spacing in the draft differs from spacing when the draft is published. Two lines are left blank in one, one line in the other.
Items that are lined up in columns in the draft are not in columns when published. But if you go back to the draft they are lined up. (Example, LISP and PROLOG in my 5 June 2012 blog.) When I go to "edit" versus "view" they are also different.