That seems like a video driver / DX12 issue.
Note that, in the P3D V5 version of our software, everything related to DirectX is completely disabled, we have a separate .DLL for V5 ( bglmanx65.dll, opposite to bglmanx64.dll which is the P3D4/DX11 version ), which doesn't do any calls to DirectX yet, because we know the sim still has issues, so we wanted to be sure not to meddle into graphic stuff directly.
KSDF, as a scenery, it's just a scenery, doesn't have any special features that can possibly be related to rendering/DirectX, other than the ones which would be eventually used by GSX (custom jetway logos, jetway numbers, fuel counters, etc. ), , which are completely disabled in V5.