Indeed, my Parrot has a preprogrammed behaviour in case of loss of signal: cease lateral movement and descend to hover until signal is reacquired (or the batter

Indeed, my Parrot has a preprogrammed behaviour in case of loss of signal: cease lateral movement and descend to hover until signal is reacquired (or the battery runs low, in which case land). If it were flying waypoints, it'd ignore the jamming as it ignores signal loss - and part of the fun flying waypoints is sending Mr Crashy out of direct control for a short time. Jamming's a fantasy attack just like shotguns are.