I had about 25 books come back recently and mostly all of them have this issue to some degree. But, if you re-submit for mechanical error there is a disclaimer that you'll be liable for re-holder fees, shipping, return shipping and shipping insurance if the books aren't determined eligible for mechanical error submission.
The total value of the books is a few thousand. And it's a large package. So, that could really add up. Not sure if my books are eligible because the slabs are only slightly damaged, hard to even take a picture of.