Spells and hits goes throught walls and safes,in player houses.If this is was intentional "fix",then it looks more like a grief from a dev side,because houses is not safe zone )) Anyway i dont need loot of those kid carebears,but why they are invulnerable
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well they have enough time to put stuff in bank while grenades hits their doors

 

I think aoe spells always have but idk about other spells.