I don't have the creators update, but have the same issue with random returns.
Other issues:
When editing a post with code in it, the
formatting changes.
Code - Auto/Visual Lisp: [Select] button does not work anymore?
Copy paste sometimes makes the text super small (workaround CNTRL+SHIFT+V)
Code drop down for tags does not work (works in Firefox though)
I'm using the latest Chrome.
*Did not add the extra returns above