A crop being planted on unhoed dirt block.

What I expected to happen was...:

You are unable to plant crops on unhoed land. 

What actually happened was...:

Players are unable to plant crops on unhoed dirt blocks, but farmer villagers are able to.

Steps to Reproduce:
1. Find a village with a compost and a farmer villager assigned to it.
2. When the farmer villager goes to his workstation, he jumps off the compost onto the farmland. 
3. However, the crop stays in the dirt block, which is kind of weird.