The Grain for the animals and the water bucket at the fall show up with empty inventories and nothing to collect. Both areas open the inventory but nothing within so can't deliver it to the appropriate area. First PC to do it I believe as of this reset from this post.
This should be fixed now. Please report if problem is persisting.
More problems i'm afraid
The Animal feed and the Bucket of water you use douring the quest are not been consumed, it appear a message with written "cow can not take any more items from you"
And then some of the things you should do like fish and harvest are not avaiable, this is the second time i made this quest, first time i noted the cow did not tooked the objects but i was able to complete the quest, now even that is possible because Milk the cows + water the camps is all i can do and is not enough for complete the quest