I just have seen at Shipol Amsterdam there is one building just in front of a jetway. And also the Airport sign is hanging in the air.In the screenshot you will see what I meen. I deleted add-ons and even mesh from Amsterdam so maybe this is the default airport. I have tried to remove the object with exclude builder but no way it is still there. Someone have seen this also.

Hi. I have the same building I think in the same place.Just in front of part of the terminal.The other thing is that schipol is at an altitude of -11ft and maybe the signage is set at 0ft so would then look up in the air.