When Arthur returns home drunk one night, he stumbles backwards, falls and shatters the living room table. A short while later he is shown sitting next to the intact table when Danny comes home from being with Lorna.
In the sequence when Danny discovers the Fed's cars following him and he sends the dog with his shoe to get his brother Harry, a person's left arm can be seen in the open door of the porch and it quickly moves back behind the door. Possibly the dog's handler; it doesn't seem to be Harry waiting to come out since he would have had his props in hand and the arm's height and size gives the impression of a person larger than Harry.
As they stop at a gas station on the run from authorities, one of the characters is shown removing a Delaware license plate from the front of the gray van. Delaware has never issued nor required front-mounted plates.
During Danny's Juilliard audition, one of the school's admissions officers stated that he needed to supply them with SAT scores. Juilliard does not, and never has, required applicants to submit standardized test scores.