the only thing I can say is, that some other 3rd party addon is causing this. There wasn't anything significant changed in the objects. 90% of the changes were done in the AirportController.
I'm personally using FTX Global, FTX Vector with AEC off completely, and FTX OpenLC Europe.
Also none of our testers had this issue.
I recommend trying to disable them one by one to find out the cause.
Discussion about Prague Airport scenery