The CKEditor instance opens with preformatted text in it, when you double click or even manually select a word or part of a word then use a formatting button, the selection area is shifted and the wrong part of the text is formatted.
This is reproducible 100% of the time even on the ckeditor.com/demo when I copy and paste what appears in my editor, but when I enter manually a formatted text section into the demo it does not reproduce.
There are no additional tags or formatting in the source after the copy/paste. Simply the <pre> tag and the text which is closed with the </pre> tag.
You can see an example of this at http://screencast.com/t/gFzdgAWJ4oK5
edit: there is whitespace at the end of the resume body that is outside of the pre tags and when removed, formatting works correctly.