Night of the Sentinels: Part 1 - S1-E1
Continuity mistake: When Jubilee's bedroom is first shown, the door is on the left side of the wall, she has a poster next to the door of what appears to be a chicken in a boxing outfit with gloves, a bookshelf next to that poster, a nightstand next to her bed and a poster of a girl playing drums on the wall behind the nightstand. After the Sentinel crashes through the window and pulls her bed out of the house, the nightstand and drummer poster have disappeared. When her foster mother comes into the room to see if everything is OK, the door is suddenly in the center of the wall, and the room itself, save for one poster on the wall that the head of the bed was on, is now completely empty. (00:01:54 - 00:02:51)
Night of the Sentinels: Part 1 - S1-E1
Continuity mistake: When Jubilee is eavesdropping on her foster parents, her right hand is resting on and pointing in the same direction as the railing. When the shot changes, her hand is now nearly perpendicular to the railing. (00:01:39)
Night of the Sentinels: Part 1 - S1-E1
Continuity mistake: The Sentinel that is intercepting Jubilee when she is running back home to check on her foster parents is initially following her along the sidewalk from behind, but suddenly catches up to her in a perpendicular path from the street. There are only two Sentinels shown in this scene and the other one caught her from the front as it turned a corner, so it couldn't have been a different one. (00:14:40)
Night of the Sentinels: Part 1 - S1-E1
Continuity mistake: The position of the police cars around Sabretooth change from shot to shot. (00:01:15)