Is this normal?

It's an Xbox One X, just posting to say I've noticed the way the black trim seems to have "drooped" a bit, slightly curved downwards in the middle, it's currently sitting on top of my laptop in the picture, but otherwise it's on a solid flat surface next to the TV, and it's elevated by some 5g wheel weights on each corner as I've been told countless times that raising it up even by a few millimetres can improve airflow under it, the front and sides seem more or less straight, it's just the back of it that seems slight curved down, just want to know if this is a concern or if it's nothing to worry about.