I was trying to plant my farm when seeds started falling out.
I see that this bug has been reported with carrots and potatoes but not with wheat. Although the wheat on my normal survival is not uprooting, only my hardcore game.

What actually happened was when I placed two seeds next to eachother, they popped out. They also pop out after a certain amount of time.
I have attached a screen shot of my farm, just incase you need it.

Steps to Reproduce:
1. Place 2 wheat seeds adjacent to eachother. They will both fall out of the ground.
2. Sometimes if you wait long enough, they uproot for no reason.