Ranged NPC Behavior broken on Stairs (High Ground)

Issue Description:
Ranged NPCs (on Stairs / higher Ground) still use ranged Weapons even when a Player with melee Weapon is within Surpression range (it should force em to use melee weapons).

Steps to Reproduce:
Player and NPC standing on Stairs (different height but still within distance).


Player ID:
[ GamerTag = COLD1X ]

Reproduction Rate:
Constant (75%)