You keep saying this, yet I've tested it on my system with a fresh install of Windows 10 and P3D V4.1, with nothing but P3D and FSDT KMEM.
Well sorry but, since it doesn't happen to anybody else (except just *one* other guy), then no, your installation is not fresh.
You can't explain it, because it's really a bug with the scenery, yet you keep saying it's a camera add-on.
You keep repeating this, but keep repeating it's a "bug of the scenery", doesn't make it anymore true. So yes, I'll say it again: if it WAS a bug of the scenery, it should have happened to EVERYBODY THAT HAS THE SCENERY.
I'm not sure it's a camera addon, the only thing I'm sure, it's NOT the scenery. Here's a video, showing everything fully working: