A mob can't avoid other entities when riding on another mob

What actually happened was...:
I summoned a zombie horse by command:

/summon minecraft:zombie_horse ~ ~ ~ {Passengers: [{id: "minecraft:creeper"}]}

Then I summoned a cat right next to the zombie horse:

/summon minecraft:cat

The zombie horse starts spinning and the creeper never goes away from the cat.
https://drive.google.com/file/d/1cNnreCwYWi9rsy0sPQhAGZMX79PNH0PN/view?usp=sharing

Then I tried skeleton on a horse:

/summon minecraft:horse ~ ~ ~ {Passengers: [{id: "minecraft:skeleton"}]}

And summoned a wolf without AI:

/summon minecraft:wolf ~ ~ ~ {NoAI: 1b}

Same thing still happens.

https://drive.google.com/file/d/1ilaQYH9EzBuKFzT8x4QWXqrkHgSEkQmH/view?usp=sharing

Steps to Reproduce:
1. Create a world
2. Summon an entity A riding on another entity B.
3. Summon an entity C that A wants to avoid.