It was an inactive settlement - 8 scavengers, so not necessarily crawling with them.Is this an active settlement or unpowered and crawling with scavs?
If active, is there a skimmer? In the notes they said skimmers now pay less attention to on foot persons and more to ships. If SRVs are classified as ships in the code, well... that'd be why the aggro range is boosted.
The thing that bothers me the most is that without the Executioner scope mod in the darkness with NV, I couldn't even see the scavenger (only where the shots were coming from); even zooming in with the scope they were tiny. Wish I'd have taken a screen shot now to illustrate it. This definitely didn't happen before. It's almost as if their detection range is unlimited.