this is just idea for improvement. Its a long time FP problem, when you use Limit to camera visibility. Its a bit useless when camera moving verticaly becase checking of visibility is done from pivot and not from bounding box. Imagine you have tall trees, so the height exceeds default 15% extend and the trees starting to popup or disappear. Increasing extend is not a solution because then is unnecessarily big and its no point to use it anymore. So the solution is checking the visibility by bounding box.