The object has been mapped with simple box mapping, looks fine in the view port and renders fine. When the object rotates the mapping does not stick and is seen in the render stretched to the extreme. Im completely baffled, there must be a simple answer. Ive deleted the mapping, remapped and the problem still occurs. i have to be able to move the object, rotate and render.
i see the same here using V5. You might get away by baking the eg. box mapping into an UV map using the _Bake command. After this you can rotate & move the object without changing the mapping as it is automatically turned into UV space.