I think I found a bug with the B12 Dove

(sorry for repeating the comment, but I think I have confirmed that what I am going to mention is a bug so I will republish it but this time it will be in the Bug Reports category)

Hello, I have found something strange about the B12 Dove mine launcher, if the mines directly hit an enemy they do less damage, but if they explode near the enemy without directly hitting they have greater damage. I noticed this when using a helicopter, regardless of whether the Dove Perk is activated or not the damage reduction is applied.

Is this on purpose or is it a bug? because in the description of the weapon this is not mentioned.