I am having the same problem with a slight difference. When I attempt to put a chest on a llama (with the above directions), it will make me ride the llama and put the chest on the ground behind it.
While looking at the llama with chest selected in my hotbar, I press the right trigger which hurts the llama. If I left trigger, it will put me on the llama and put a chest behind it where I was facing.
While looking at the llama while sneaking, I press the right trigger which also hurts the llama. If I left trigger it just opens the llamas interface.
While on the llama, I press the right trigger (on the selected chest) and nothing happens. Same thing for the left trigger.
I am having the same problem with a slight difference. When I attempt to put a chest on a llama (with the above directions), it will make me ride the llama and put the chest on the ground behind it.
While looking at the llama with chest selected in my hotbar, I press the right trigger which hurts the llama. If I left trigger, it will put me on the llama and put a chest behind it where I was facing.
While looking at the llama while sneaking, I press the right trigger which also hurts the llama. If I left trigger it just opens the llamas interface.
While on the llama, I press the right trigger (on the selected chest) and nothing happens. Same thing for the left trigger.
I do not know what I am going wrong.