I notice when loading a save, scripted NPC, like those at road blocks will respawn another set.

Recent game, played normal settings, I am post nuke, and post 3 months. Moving around the map and ran into a road block, one I ignored and went past, one I wiped out, went down the road and quit the game. Loaded back in later, and found the wiped out road block respawned, turned around, and the roadblock I ignored has 8 soldiers instead of 4

Anyone seeing this as a bug?