Ground Support Attack Plane's Bomb Does NO Damage to Behemoth

Product: Battlefield 1
Platform:PC
Summarize your bug The ground support attack plane's second weapon (bomb drop) does no damage at all to the enemy behemoths. In particular, it does absolutely no damage to the train. It can do damage to tanks and other vehicles, but not the train? That isn't consistent with how other weapons are.
How often does the bug occur? Every time (100%)
Steps: How can we find the bug ourselves? Select the ground support attack plane and fly it towards an enemy behemoth train. Drop bombs on top or next to it (weapon 2).
What happens when the bug occurs? It does no damage whatsoever to the train.
Please select your region North America
In what game mode did the bug occur? Conquest
AMD or Nvidia Model Number
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The ground support attack plane's second weapon (bomb drop) does no damage at all to the enemy behemoths. In particular, it does absolutely no damage to the train. It can do damage to tanks and other vehicles, but not the train? That isn't consistent with how other weapons are.