When a player tries to pick up a backpack and in a PVP zone, allow it if in the config if the PVE player is aggressive or in a PVP zone.
Right now when trying to pick-up a native backpack, it says it's not yours, but still allows looting it the way I have it setup in the config settings.
If the player can loot it, then it should be able to be picked up.
On my server if a PVE player doesn't agress the other player they have protection from looting if they die from environment then their loot is safe unless in a PVP zone.
I use NoEscape.cs to check if they shot the player or is raiding.
Combat Block or RaidBlock