Villagers not harvesting crops when gamerule mobGriefing is "false"

Put the summary of the bug you're having here

What I expected to happen was...:
Farmers villagers will start to harvest mature crops on their own & then share food with other villages to start the breeding process if there are enough doors & tilled plots with mature crops. This worked fine in the other snapshots but appeared to not work in both 14w19a & this snapshot 14w20a.

What actually happened was...:
The villagers are not harvesting the crops at all so they also won't share food to start breeding. I did a lot of testing in the other snapshots & they all worked just fine until both this snapshot & the one before this one, 14w19a & 14w20a.

Steps to Reproduce:
1. Either build or add on to a village so there are enough doors & tilled soil to start the harvesting process along with at least one brown robed villager. I also lit up the village so I didn't have to worry about mobs killing the villagers during my testing.
2. Wait a bit & you will see once the crops are mature the villagers will not start harvesting any of the different crops.
3. ...No breeding will happen since the villagers are not sharing the food with each other even though there are plenty of doors & tilled mature crops. If you trade with a villager they will have one child but still will not harvest any crops.