I hope this is a unique problem, but my month-old iPhone SE with the “fancy” inlaid Apple logo on the back had a leaf failure. The “color matched stainless steel logo” on the back is made of two separate pieces, the apple and the leaf, which are pressed into place.
My leaf fell out.
At a genius bar Apple replaced the phone free of charge, but they did not know how to classify the problem. I was the first they had heard of such a problem.
I suspect it was sucked out by a car holder I use with a sticky pad that holds the phone in place.