Bug sur les récolte

Hello, there is a problem with the crops, I can break the coal stones or other, it does not normally give me the crops, it has a kind of cube when you break it, there is no I don't understand, it would be good when solve the problem please fix it it's not possible to play this game which has bugs all the time in each world it's the same thank you for doing the necessary so that it doesn't happen again