That's similar to info I received on another forum. I press one of the permanent non-touchscreen buttons on the left of the unit at the top, three parallel lines, and it takes me to the camera control screen. I select the camera, and wah lah! That camera stayed viewing as the coach was put into gear. Problem solved.
Doug & Linda & Tommy (19 lb cat)
2019 Winnebago Forza 34T
2020 Jeep Wrangler