It's impossible that any update for Couatl or GSX could have ANY effect on jetways. Jetways are controlled only by the AFCAD. The issue is likely with parkings overlapping with their sizes, which has been set fairly large to allow larger airplane (otherwise people will complain not seeing any AI heavies), but this could result in such problems.
We'll check this on the AFCAD, trying to find a compromise between realistic AI assignments, and jetways operation.