Just got a new roof installed, and noticed that this one section with a flat roof has the corner lifted.

The contractor said it looks like that since the gutter is lower at that point for drainage, but I checked with a level and it is definitely much higher. If I step on that spot, it doesn't move.

Towards the house it is level. I am about to test by hosing some water to see where it goes, but is this a bad install?