damage_args in damageable DamageEvents fails to process Source when Instigator is false

General Issues and Bug Reporting
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What Type of Bug are you experiencing?

Verse

Summary

When creating a damage_args to use with a damageable.Damage() call, if the Instigator is set to false, it also does not pass along the Source. this is a problem because instigator is a game_action_instigator, an internal epic class that we cant inherit from…but we can inherit from game_action_causer. If this bug didnt exist i could pass along any custom class that inherits from game_action_causer as a source and be able to figure out where the damage came from (the class isnt an agent).

Steps to Reproduce

objective_test := class(creative_device, game_action_causer):

    @editable
    ObjectiveDevice:objective_device=objective_device{}

    @editable
    DamageButton:button_device = button_device{}

    OnBegin<override>()<suspends>:void=
        DamageButton.InteractedWithEvent.Subscribe(ButtonDamageEvent)
        ObjectiveDevice.DamagedEvent().Subscribe(OnDamageResult)

    ButtonDamageEvent(Agent:agent):void=
        #THIS DOESNT WORK (never reaches "Has Source")
        ObjectiveDevice.Damage(damage_args{Source:=option{Self}, Instigator:=false, Amount:=50.0})
        #THIS WORKS
        ObjectiveDevice.Damage(damage_args{Source:=option{Self}, Instigator:=option{Agent.GetInstigator()}, Amount:=50.0})

    OnDamageResult(Result:damage_result):void= 
        Print("Objective damaged for {Result.Amount}")
        if(Source:=Result.Source?):
            Print("Has Source")
            if(IsMe:=objective_test[Source]):
                Print("Its me!")

Expected Result

Source should still be passed in the damage_result even if Instigator is false

Observed Result

the damage_result Source is false even though it was passed through

Platform(s)

uefn pc