Hi,
Just checked myself, if I control the jetway via GSX (Request Deboarding), everything works fine.
If I control the jetway via the SODE menu and select GSX services thereafter, the jetway disappears.
Seems like SODE doesn't handle situations where SODE and GSX are being mixed.
Btw, out of interest, do you send own door coordinates to SODE? When controlling the jetway via GSX, the docking was much more accurate.