Mine sits the same way. Part of it is the angle the car is sitting on. Part of it is the angle that the photo is taken.
Some people said that the Bilstein shocks add height in the rear, but I don't know how that's a thing as they do nothing with the springs... Unless the bumpstops aren't trimmed enough. But I doubt that's a thing, as the stock suspension should have more than 2" of travel.
Level ground, photo taken from roughly even with the lower window trim:
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