Continuity mistake: Ryan is at the mailbox, looking through the envelopes. When Andy drives up, Ryan turns around with the mailbox door open. Andy grabs Ryan and pushes him several feet away from the mailbox. When Andy is driving away, the red flag on the mailbox is up. (01:08:28 - 01:09:22)
Continuity mistake: The way Linda holds her coffee cup changes numerous times, often instantly with front versus rear views. The handle switches (changes 90° or 180°) from facing towards her chest to her left knee to opposite her chest while holding the cup between her bent knees, which vary in distance apart. The cup is held a few inches above, below, or about even with her kneecaps. (00:44:35 - 00:48:23)
Plot hole: The movie takes place over a period of a couple of months (from full-grown pears to harvest time). Grandpa may be in arrears with the bank when he dies, but the bank cannot repossess and sell the orchard/farm within such a short period of time. The property has to go through probate, which can take several months, if not 1-2+ years. Determining the validity of the will and issues related to minor Andy inheriting the estate takes much more time to settle.