At about 1:14:46, while they are, "Taking apart" Davis' marriage, Chris is shown throwing a pry bar at a large flat screen TV which causes a single spider crack. Camera cuts at 1:14:47 to an alternate view and the screen shows no less than three of these cracks revealing it took several takes to get desired bounce of pry bar.
Chris is shown to draw a target on the mirror with lipstick which vanishes magically when Davis uses the mirror again in the next scene.
At around 1h20m when Davis and Chris are in the car there are several in and out frames in which the car dashboard clock shows different time of day.
You certainly can't do such a job of destruction on your property without a permit from the city. And without nobody coming around.
After incorrectly swiping left from the lock screen to read his father's text message, he swipes left to exit the Messages app. You cannot exit by swiping left; you must swipe right. The actor is clearly looking at screenshots in the Photos app.
While at the wake, Davis gets a text message on his iPhone from his father and he swipes left on the lock screen to read the message. You cannot swipe left to get out of the lock screen; you must swipe right.
When Davis is in the diner and speaks to Karen while she's in the parking lot smoking pot, he says she's in a Corolla when she is clearly driving a Camry.
55 minutes into the film the back door porch is closed. When the camera turns back the porch door is open, yet nobody went in or out of the house.
(around 43:34) Davis asks Chris, "Do you want some grilled cheese?" Video has different lip movement.