The retro cams position is "shit" with tall trailers and short trucks. Please see the M916 towing the repair cab and have a look at the camera, caught "bouncing":
You get seasick with the camera trying to avoid the happily bouncing trailer.
maybe a pipe or so too close? Same / similar Issue Zikz.
If that one hauls the fat Semi Trailer with fuel, even in the most forward/center position you cant see the truck at all. A "bit" forward and the same altitude - and it would be ok. And maybe the former trailer wount mess up the camera and can bounce behind it.