Put the summary of the bug you're having here

I didn't expect this to be true 
But if you plant wheat seedlings below and throw off the anvil, then the anvil will fall after that, but on the contrary, the seeds should fall out and the plowed land would become ordinary land.
After that, I started laughing .

Steps to Reproduce:
1.We plant the seeds below, then make a pillar of blocks and put an anvil over the seeds.
2.It drops out.