The lighting issue is pretty surprising, if only because making people pick goods in the dark sounds like it would decrease efficiency far beyond any money motion sensing lights might save.

The rest is pretty unsurprising, although if the lights did work right, there's still a very special misery associated with being in a large space that has only motion sensing lights. Something about being surrounded by darkness while you're perpetually under a light is very strange, and it's made even more disconcerting because motion sensors on their associated lights don't trip until you're getting into the space where you need that light. It feels like constantly walking into dark rooms and then having somebody flip the light on unexpectedly.