This has been discussed so many times:
- Jetways are not controlled by GSX in any case, not even if you use GSX replacement jetways (which on a 3rd party airport you shouldn't).
- There's a specific problem at LFPO, which is caused by the Volocopter package that conflicts with both Paris airports (LPFG and LFPO), causing jetway to malfunction even if you don't have GSX installed, so you must remove the Volocopter package.