Continuity mistake: When Carl is shot and falls to the ground, the position of his body changes. For example, his left arm is down, but in the wide shot, both arms are straight out in a more dramatic pose.
Continuity mistake: When the siblings are in the elevator, leaving the meeting with their father, they have fruit on them from the demonstration of Vanya's powers. Alison has some fruit in her hair in one shot; the next shot the fruit is gone; then it's back.