A family of Microsoft word processing software products for creating web, email, and print documents.
Nothing, other than sending a frown to Microsoft, which many of us have done, though they are not listening (or, they have not been able to correct this, so far).
Meanwhile, it can be assumed that if the margin is correct on even pages, it would automatically be correct on odd pages. Simply ignore the displayed margin on odd pages. While this assumption is fine for plain text, it poses difficulty when one wants to adjust the size of an inserted image to the maximum width. In such cases, match the width of the image with the width of the displayed text. The other way can be to note the offset in the displayed margin, and adjust the width of the image accordingly.