I have a title page to a document that I copied from Document 1 (on the left in the screenshot below) to Document 2 (on the right). When I do so, as you can see, some additional whitespace appears between each line.
The before/after paragraph spacing is (0,0) for both docs, and the line spacing appears to be the same as well.
What else can I check? This problem is occurring in Word 2013.