I'm not sure how this happened, I'm quite sure it was from before I bought the car and I just never noticed, but anyway, in the attached picture, look at the upper light pipe. It's warped slightly away from the inner back of the light housing. I'm pretty sure it's un-fixable as well, since that cavity is sealed up with adhesive to prevent moisture from getting in (as opposed to behind that back wall, where you can open up the tail light to get to the two bulbs and the LED assembly for the upper piece).
Anyone ever noticed this? It probably requires replacing the whole tail light, which is obviously more money than it's worth, but now that I've noticed it, it's going to annoy the hell out of me every time I see it
