Removing jetway before boarding is completed

[deiks]

Hi,

I have experienced this at some airports. I'm wondering if this is due GSX profile or what? I have tried to search through GSX profile to prevent this but didn't find the option.
Could it be locked until boarding is finished no matter what?

Thanks

[virtuali]

GSX removes the jetway only after calling Departure so, if the jetway is removed, it's not by GSX.