CK II - [2.8.3.2] Damage_unit doesn't work properly

[Arsakes]

One line summary of your issue
`damage_unit` doesn't work properly

Game Version
2.8.3.2

What expansions do you have installed?

Monks & Mystics,
Horse Lords,
The Old Gods,
The Republic,
Legacy of Rome,
Sword of Islam

Do you have mods enabled?
No

Please explain your issue is in as much detail as possible.
Modding command :

damage_unit = {
    type = <unit_type>
     amount =  <value>
}

doesn't work properly, setting specific unit type doesn't change anything - every troop type is affected.

Steps to reproduce the issue.
Create an event that have following command in option:

any_controlled_unit = {
 damge_unit = { type = heavy_infantry amount = 100 } 
}

And trigger this event on a commander with light troops to see they are affected anyway.

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