Miles' black Mont Blanc fountain pen is precisely placed in front of him as he is sitting at his otherwise empty desk. When the camera returns, the pen is still immaculately placed but facing the other way.
In Massey's first meeting with Rexroth, the water spit from his mouth onto the table appears and disappears between camera shots.
When Miles tears up his speech, he only tears it once, vertically. Shortly afterward, we can see over his shoulder onto the podium, and the remains of the speech are visible, but it is in quarters.
When Miles and Marylin are eating dinner in the restaurant, Marylin is holding her wine glass around the bowl. In the next shot, she is then holding it by the stem.
While Miles and Marylin are having dinner, Marylin's hair in close up, especially on her right side, is hanging in front of her, but in profile it's hanging down her back.
Much of the film's plot is driven by inaccurate representations of California divorce law. Under the community property theory, factors like infidelity are virtually irrelevant to the distribution of property upon divorce.