I had that problem and the dealership replaced something behind the center screen. I haven't had the problem since. That was almost 2 yrs ago. Good luck.
I love my Maverick Lariat Hybrid alot. I also loved my 07 Mustang gt. Unfortunately, somebody pulled out in front of my wife, and my mint Mustang was totaled, ugh.
I finally went to the dealership and got a new battery for free. I haven't had the problem since, and that was 4 months ago. Other than that, I really love these trucks. Good luck with your problem. I hope it gets resolved soon.
I'm guessing that since your camera was looking down at the ground, it got confused. As your backing out of your angled driveway, when you transition to the flat road, there is going to be a moment when the camera is closer to the road. Maybe that confused it. I'm not expert and I'm just guessing.
I had an issue where the backup camera would stay on even when I was going forward. At the same time this happened, my radio would be on when I started the truck, even though I shut it off before shutting the truck off. The dealer fixed it by replacing something behind the screen. I'm not sure...