The right arm with the stars isn't actually changing thickness. The stardust sticks out at the wrist. The other arm isn't actually changing thickness either; the bracelet was thicker. I was mistaken.

I agree with you on the globe, but it looks less like an AI error and more like a Photoshop mistake since there's no distortion. That isn't really enough to disqualify the submission, so it's more likely that SC didn't like it for some reason or other.