A framed photograph of Frank and Grace is shown on a shelf at approximately 1:08 in the movie. It appears that Frank is holding the baby in his right arm. This is a reversed image as evidenced by the direction his vest is buttoned. The same framed photo is shown twice later in the movie: at 1:35 sitting on what looks to be the same shelf and again at 1:57 being held in Hannah's hands. These show the correct orientation of the image with the child being held in his left arm.
Multiple date discrepancies: (1) the calendar in the kitchen in May 1921 showed May 1st as a Monday, but 5/1/21 was a Sunday; (2) the calendar in the kitchen in April 1923 showed April 1st as a Thursday, but 4/1/23 was a Sunday; (3) the calendar in lighthouse in 1923 says Monday, April 27, but 4/27/23 was a Friday; and (4) a notice on a bulletin board in 1927 says a Nativity play will be performed on Saturday, December 14th, but 12/14/27 was a Wednesday.
Throughout the film, the west coast town of Albany, Australia is incorrectly referred to as "ALL-bany" instead of "AL-bany."