Ed Munn's photo on Stella's mantel moves from being beside the flowers to being directly in front of them.
When Stephen Dallas is first seen in his office, he's typing a letter. You can see that his fingers type several different keys, spaced out on the keyboard (probably in the middle of the middle rows) before he lowers his hands and stops typing to read. Then when he reads, you see that his letter ends with two dashes. It's not possible for him to have typed two dashes using the keys he was striking before he lowered his hands.
When Stella Martin places the book down after Dallas passes by her, she keeps her right arm by her side and left arm resting on the fence post. But in the following cut when her brother arrives, she now has both arms resting on the fence post.
When Stella is working on the sofa in her light robe, you can see the padding on her rear. This is later in the movie.