I tried at LFPG, KLAX, LIRF or also at BIKF (no sceneries for them so it's the default ones) and I have asobo's jetways.
Please read the explanation about the bug in SU9 which would prevent jetway replacement unless you remove the content.xml file each time.
In addition, I have some bridges that are invisible, so the jetways are detached from the terminal.
If you are referring to the same airports you have Asobo jetways, you should have default Asobo bridges as well, unless you mean other airports, or you mean you have default Asobo jetways with GSX replacement bridges ? Please clarify.
However, about bridges retracted, that wouldn't make any difference, since there's a known simulator bug that results in bridges not always extending, and that affects both default Asobo bridges and GSX replacement bridges or any other jetway bridges for that matter, because it's a simulator bug that happens even when everything is default, and has been reported to Asobo more than a year ago.
Do you want I put a file in attachment like the couatl.err or another ?
You don't seem to understand: jetways and replacement jetways don't have anything to do with GSX the program, they are just a set of sceneries that doesn't require any software to work, and are controlled completely by the sim.