Yes, its true. Kidnapped mission is badly bugged.
DaMorgs had a great rant about it not long ago when we embarked on this Wangal ‘versus’ HIP 20199 thing.
Also, be wary of salvage missions where the required cannisters are listed as ‘(Mission Specific)’ in the mission description. For such a mission, I found no cannisters of type in USS/Weak-Signal-Source sites that were tagged as ‘MISSION TARGET’ and I must have visited about a dozen of these sites in the designated system – they kept spawning the ‘right’ cannisters, but none for the mission specific 😮
Oi! That's Baron von Schnellenstein to you, mate. No, it doesn't matter that I'm an Imperial Prince!