Pandas can pick up a stack of bamboo at once, rather than taking one item at a time.

Repro steps

1. Launch the game.
2. Create a new game in Creative Mode.
3. Obtain Panda Spawn Egg and Stack of Bamboo from the Creative Inventory
4. Spawn the Panda
5. Throw a stack of Bamboo at the Panda
6. Observe the issue

Observed results

 Panda picks up a  stack of Bamboos as a whole/all at once. 

Expected results

Panda picks up and eats only one Bamboo at the time instead of a stack.
"Pandas can pick up bamboo and cake and put in it's main hand slot."