Its an airport with SODE and developped by Justsim.
We cannot guaranteed you will never have such issues on 3rd party SODE jetways, because:
- We cannot be sure if their parameters are accurate
- We have an additional parameter in our jetways which is not part of SODE, that specifies a separate walkable floor height independently from the roor floor height and, since this is missing in normal SODE jetways, we apply a standard correction factor, which usually works, but might not work with every model, and of course also require the height in the first point is set correctly, which we cannot possibly know if the jetway is not one that comes with GSX.