I'm not sure this is an SU10-specific issue, because I've noticed it before, but maybe there might be a chance to fix it for SU10.
The screenshots shows what I think are several issues with Jetways and Jetway Links:
1) Jetways sometimes dock in strange places. In my screenshot, the jetways docked on the back passenger door, passing through the airplane wing. Sometimes, they even dock on the *service* door, with the head turned around itself completely. Yes, there are some fairly rare jetway types that are designed to pass *over* the wing, but they are very uncommon, and they are quite different in design anyway. And, docking on the opposite side of the cabin is simply wrong.
I think it would be best to allow docking only on the main passenger door, even if there isn't a specific type that differentiate a "main" passenger door from just a passenger door, this could be the farthest along the longitudinal axis. And, docking on a door on the right side of the fuselage should be avoided in any case, because the jetway coming from the left side *will* cross into the fuselage in that case.
The best option would just not docking, better saying the jetway cannot dock ( so maybe users might park differently), rather than have it docked in strange places.
2) Jetways seem to loose sync of their docked status when switching LODs. Initially, the jetway seems fine but, after a minute or so if you wander around in Showcase Camera so different LODs are triggered, some LODs shows the jetway docked, but other don't, and even if you go close again, the better LODs that used to work when the jetway docked initially, show the jetway as not connected.
3) Jetway links sometimes don't extend. In the screenshot, some of they have extended, some of them haven't, at the same airport. This is also seem to be more common when triggering LOD switches by wandering around with the Showcase Camera. Ending the flight, going back to the Main Menu and returning to the same place usually fix the issue, until it's back again, due to LOD switching.
Attached some screenshots, Jetways are the DEFAULT ones, there are NO ADD-ONS in the Community folder, the airport is default LIMC ( Milan Malpensa ).