Night of the Sentinels: Part 1 - S1-E1
Deliberate mistake: When the Sentinel is first walking through the mall, its footsteps are so heavy that it shakes the building. When it is shown walking past the shop Gambit is in, there is no shaking of the building, presumably done so Gambit wouldn't notice it. (00:04:08)
Night of the Sentinels: Part 1 - S1-E1
Continuity mistake: When Jubilee is first shown in the arcade, the space between the rows of games is roughly six feet. When Jubilee runs out of the arcade, the corridor is suddenly much wider. (00:02:57 - 00:03:37)
Night of the Sentinels: Part 1 - S1-E1
Continuity mistake: When the arcade manager is confronting Jubilee after she accidentally destroyed the game she was playing, he is several feet away from her, with other patrons between them. When the shot changes, he is suddenly in her face. (00:03:27)
Night of the Sentinels: Part 1 - S1-E1
Continuity mistake: When Jubilee is first seen eavesdropping on her foster parents, you can see the shelves of their entertainment unit are empty. Moments later when her foster mother is questioning if Jubilee is really a mutant, her husband shows her what Jubilee did to the VCR just by touching it, and you can see the bottom two shelves now have items on them. Additionally, the coffee table goes from having a blue top with a brown border within it, to being a solid brown top altogether. (00:01:39 - 00:02:17)
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)
Night of the Sentinels: Part 1 - S1-E1
Character mistake: When Jubilee wakes up in the infirmary, the sphygmomanometer on her wrist has been applied over her gloved hand, which could cause a false reading. Beast is the X-Men's resident doctor, so presumably he's the one that applied it to her, so he should have known to remove her gloves first for more accurate readings. (00:08:24)
Night of the Sentinels: Part 1 - S1-E1
Factual error: When the Sentinel reaches out to try to grab the dog, it smashes its hand against the grass and produces numerous cracks in the lawn with a metal clanging sound. Neither of these things would happen. The grass would have a bunch of divots in it, and the sound would be similar to something heavy falling in dirt. (00:02:09)
Night of the Sentinels: Part 1 - S1-E1
Other mistake: In the scene where Professor X uses his psychic powers to deduce that Jubilee is trying to escape the mansion, there is a semi-dissolve edit that simultaneously shows a close-up of Professor X with his left hand on his forehead and a counterpart image of Jubilee hiding around the corner. If you look closely at Professor X in the counterpart image of Jubilee, his left arm and hand are shown to be on his hover-chair's armrest and not his forehead.
Answer: Chris Potter, the original Gambit voice actor, did indeed quit the role in the 4th season. His last episode was The Phalanx Covenant Part 1 so it seems reasonable that Fox would limit the use of the character even though it was recast. It doesn't appear that Potter left the role due to animosity, he stated in an interview that he wished to play Gambit in the first live action X-Men film.
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