Interesting. I use the below. I don’t know if that was the case 2 years ago or not. Due to this bug, I never duplicate this way.
// Create the attribute set, this replicates by default
// Adding it as a sub object of the owning actor of an AbilitySystemComponent
// automatically registers the AttributeSet with the AbilitySystemComponent
HardRefAWAttributeCore = ObjectInitializer.CreateDefaultSubobject<UAWAttributeCore>(this, TEXT("AWAttributeCore"));