Llamas, unlike horses, can be kept feeding hay bales even if in love mode

The bug

Llamas, unlike horses, can be kept feeding hay bales even if in love mode.

How to reproduce

1. Spawn in a single llama
2. Tame said llama
3. /gamemode survival
4. /give @p hay_block 64
5. Give llama a hay bale to bring it to love mode
6. While in love mode, keep feeding the hay blocks. This has no effect on llama, but removes items from players inventory.

Repeat with a horse and golden carrots. Horse while in love mode will refuse taking more golden carrots from the player until it successfully breeds, or time outs from the love mode.