My ipad mini 4 is having an issue when I play videos, especially on the netflix and hulu apps. As the scene changes or the camera cuts to another person in a scene, my screen will automatically increase the brightness. Then it will decrease. When the scene changes again it will brighten again. This happens over and over again and is really frustrating. I found that when I put assistive touch on this solves the problem but I hate assistive touch and it annoys me that I even have to do that. Anyone else experience this issue? My ipad is still under warranty.