Villager Iron Golems do not defend from Screaming Goats upon attack?

Is it intended that Villager Iron Golems do not attack Screaming Goats, if the Screaming Goat attacks the Golem, not even when the goat attacks a Villager?

You can try it.

/summon minecraft:goat ~ ~ ~ {IsScreamingGoat:1b}

is to spawn the Screaming Goat

and

/summon minecraft:iron_golem

for the Iron Golem