Reinforcement zombies will attack creative mode player.

I used this command:
/summon Zombie ~ ~ ~ {Attributes:[{Name:"zombie.spawnReinforcements",Base:1.0}]}

After punching the zombie a few times, reinforcement zombies appeared.
What I expected:
They would walk around aimlessly with no target.
What happened:
They attacked me. See below.
After they hit me once, they stopped.