I installed W8 Pro a couple of days ago and today tried OneNote.  I wanted to copy the 'free' Windows Media Center key email from the Metro Windows 8 Mail app.  Initially I couldn't get any Copy selection at all.  Then I discovered if I selected a text area I could copy if I pressed my mouse left key for a number of seconds before moving it.  However it still only copied as far as the first graphic in the email.  I could restart the copy after the graphic.  After that I just pasted into OneNote without a problem.  So I guess I have half a bug!

 

I'm using a laptop (i3 2.5GHz with 8GB memory).