are you absolutely sure it is normal, that when flying above the airport at just 1500ft AGL entire buildings and rooftops start to disappear?
Of course it is. The whole scenery moves up depending on the eyepoint height, in order to prevent heavy ground flickering, for the same reasons already explained in my previous post.
I ask this because I do NOT see this problem happening with KIAH, this only happens at CYVR.
It's less noticeable, just because not all buildings have the same heights, so they won't be affected in the same way but yes, even KIAH raises from the ground in real-time.
We came up with an entirely different solution, native to P3D, for KMEM, so it's possible we might be patch the other sceneries in the same way, but I cannot see exactly when, since we are a bit busy working on the new releases.