High quality chocolates are often packed into a cardboard boxes. The orientation of the chocolate bar might be a relevant factor in paper packaging, but box offers a possibility to improve the user experience.
These boxes are often opened from the bottom. And after the opening, the bar lays on the premium looking folio -upside down.
Manufacturer could turn the bar around, thus facing up for customers delight and to show the high quality surface of the chocolade instead of the bottom..