We have about 1500 miles and this is showing up on both sides at the rear of the door where the plate comes off the chaiss for mounting the doors . It hasn’t been rolled we do a lot of off roading riding and trail rides. At first I thought bad powder coat job.
Welcome from Tucson AZ. Something like that "could be" outside the scope of a 6 month warranty. If you haven't rolled like you say, I would still bring it back and ask the dealer to start a claim. Good luck.