This has been discussed so many times on the forum and, of course, it's NOT a GSX problem, it's a bug in the jetway system in the sim, which happens with default airports at default jetways, and has been reported to Asobo more than a year ago, BEFORE GSX even came out.
As you can see here on Asobo devs forum, where I made an example of the problem with a default airport using the default jetways and
no GSX installed:
https://devsupport.flightsimulator.com/questions/9771/some-longstanding-jetways-issues.htmlThis was the latest answer we got from one of the Asobo devs:
I was able to produce both issues on LIMC using your guidance. It's not a 100% repro but reliable enough for us to be able to investigate it. Thank you for your feedback.