These issues have been around for years. They are present in all Microsoft Flight Simulators.
1. Sometimes, when calling a jetway, the cabin door doesn't open automatically. If the doors do open automatically at some airports, for some reason only the left entry door opens, and it can't be closed while GSX is running.
2. When performing catering, when the vehicles lower the platform after the doors are closed, these doors open again, requiring them to be closed again.
3. Very often, when calling refuelling, the vehicle gets stuck near the wing and won't leave under any circumstances. Because of this, calling boarding is impossible.
4. During boarding, after the baggage has been loaded, the baggage doors cannot be closed. Only after boarding will be complete
Here I have listed the issues with GSX working with the PMDG 777-300ER. I would really like these issues fixed.