Spiders attack player in Creative Mode

I created a New world in creative mode to test the new features, and I punched a spider and it aggro'd on me.

What I expected to happen was...:
I expected the spider to ignore me; I tested it with a zombie and the zombie ignored me.

What actually happened was...:
The spider attacked me.

Steps to Reproduce:
1. Go in Creative
2. Punch Spider
3. View results