At around 1:27 Mickey lights a cigarette while talking to her soon-to-be ex-husband, a little later when she sits in a chair, the cigarette is not even lit, in the next scene it is lit again.
Towards the end of the movie, Melanie and Mickey are meeting (with Ordell and Louis) when Mickey stands up following rolling a joint. It is clearly shown in her hand, but when she finally walks past Ordell to go to the bathroom, it is gone. She has clearly not put it down or dropped it, it just disappears.
When Frank is in the hotel talking with Melanie; her left hand is holding a bowl that has a dessert and a spoon inside while her right hand is on her lap. However, in the next shot, she is no longer holding the bowl and her arms are down by her side.
Toward the end when Mickey talks to Marshall after running into him at the club; the car window is clear as she starts to enter her car. However, at the next cut after she enters the car; the window is now covered in melting snowdrops.
When Mickey is in the kitchen smoking a cigarette and talking to her husband; she puts the cigarette down on the counter after her husband quotes Henry Kissenger and starts walking to the living room. However in the next immediate cut as she enters the living room; she now has the cigarette in her hand again.
After Marshall regains consciousness and breaks out of the closet, there is a shot of the stereo with a record playing. The audio is only soft hiss and crackles but the tone arm has clearly not yet reached the run-out groove. Unless the record has an unusually long period of silence in the last track, there should still be music playing.
Richard states that the Garand, Army, World War II, is German standard issue. That is wrong, the Garand was standard issue for the US Army. The next weapon he brings up is the M1 Carbine, standard issue for the US Army. This is also incorrect. The M1 Carbine was a smaller, more compact weapon that was issued to specialist troops, e.g. armor crewmen, and though it became popular was not standard issue for the US Army.
When Marshall looks over the rail after breaking out of the closet; the next shot is the turntable arm and the sound of the needle playing on the end part of the vinyl where there are no grooves. However, this is an automatic turntable as evident in the shot when Marshall first turned it on; therefore the arm would have lifted up and returned to the cradle upon reaching the end of the record.
When Frank attributes the quote "Never Complain Never Explain" to Henry Kissenger; Mickey corrects him that it was Henry Ford. Although Ford used that quote; it is originally attributed to 19th-century UK Prime Minister Benjamin Disraeli.
When Mickey is talking to Frank about their divorce toward the end, there is a small hole in the her culottes.
The movie opens as Detroit 1978 although the newspaper front pages throughout the movie are from February 1977. The vehicle license plates appeared to be 1979 and not the Bicentennial license plates that were valid from 1976 through 1978.
The brand of golf ball used in the Bahamas scene is "Noodle Long and Soft", which were introduced 25 years after the setting of the picture.
The dash of Marshall's vehicle is shown briefly during his backing over the garbage cans. A CD player with the face plate removed can clearly be seen. Car CD players with removable face-plates were definitely not around in the late 70s.
In the first shot of Walker driving as Ordell narrates, you can see the reflection of the cameraman in the rear door window of the car.
When the cop is reporting the gun shots, he says the location is State and Fair, east of Woodward. State Fair is one street, not an intersection and it intersects with Woodward.