Game crashed to launcher when applying chest to Donkey

What I expected to happen was...:
Donkey would be outfitted with a chest.

What actually happened was...:
Game crashed to desktop / launcher with bug report.

Steps to Reproduce:
1. Start creative world.
2. Use Horse spawn eggs to spawn a Donkey
3. Ride Donkey until tame.
4. Right click with Chest in hand.

Crash report attached.