When I was giving zombies bows, they didn't shoot arrows. They only attacked with their normal hands.

What I expected to happen was...:
A zombie shooting arrows at me.

What actually happened was...:
They only attacked with their hands instead of shooting arrows

Steps to Reproduce:
1. Create a new world in creative with cheats on.
2. Use the zombie spawn egg in the miscellaneous category in the creative item selection or search "zombie".
3. Get the bow out of the creative inventory in the combat category or search "bow".
4. Keep spawning zombies until one of them gets a bow. If a zombie didn't collect the bow, pick up the bow in creative mode.
5. If a zombie collected a bow, go into survival mode and get near it.