'Til Death Do Us Part: Part 2 - S2-E2
Revealing mistake: In the second shot of Rogue and Beast standing outside the hospital, you can see they are floating about a foot above the sidewalk. (00:05:16)
'Til Death Do Us Part: Part 2 - S2-E2
Continuity mistake: When Beast and Rogue are standing outside the hospital, there is a beige car in front of them. When the shot changes, the car is gone. (00:05:12)
'Til Death Do Us Part: Part 1 - S2-E1
Continuity mistake: When the Friends of Humanity are getting in the car to escape from the fight, the backseat area of the car is shown to have window louvers that are the same red color as the car's body. When the shot changes and shows the car from the interior, the windows are plain glass. (00:12:09)
'Til Death Do Us Part: Part 1 - S2-E1
Continuity mistake: When the bartender begins saying "I bet you know the President," she is standing by Beast's left shoulder. When the shot changes, she is face to face with him. (00:11:13)
'Til Death Do Us Part: Part 1 - S2-E1
Continuity mistake: When Morph, disguised as Wolverine, bumps into Rogue, she is holding a steaming mug of coffee. When she tells him she is going to the rec room to take a nap, she is holding the mug sideways, with no steam coming from it. The camera was on her face for most of this sequence, so she couldn't have finished drinking it, and there is no spilled coffee on the floor, so the mug should still be steaming. (00:14:09)
'Til Death Do Us Part: Part 1 - S2-E1
Continuity mistake: When Beast is saying "What's in a name," he and Cyclops are standing on the right side of the red carpet, and Gambit is standing right behind Beast. A couple of shots later, Beast and Cyclops are now standing on the left side of the red carpet, and Gambit is now standing several feet away by the door. (00:05:32)
'Til Death Do Us Part: Part 1 - S2-E1
Continuity mistake: When Wolverine stabs the Danger Room doppelganger of Cyclops, he is running him through in the center of the chest. When the shot changes, he is now stabbing him through the left collar bone area. (00:03:04)
'Til Death Do Us Part: Part 1 - S2-E1
Continuity mistake: When Wolverine leaps out to engage the Danger Room doppelganger of Cyclops, his claws are extended. When he lands, there is a closeup shot of his right hand, and his claws are suddenly retracted, and he extends them again. (00:02:16)
'Til Death Do Us Part: Part 1 - S2-E1
Other mistake: When Morph, disguised as the reverend, is saying goodbye to Cyclops, the characters in the background never move a muscle. (00:04:10)
'Til Death Do Us Part: Part 1 - S2-E1
Revealing mistake: When Morph has sabotaged Beast's Danger Room session, the same shot of Beast running away from the projectile apparatus is used twice. (00:18:08)
'Til Death Do Us Part: Part 1 - S2-E1
Continuity mistake: When Rogue takes the unconscious Gambit into the War Room, she sets him down on the center table and stands at the edge of it. When she is showing Storm that she absorbed his powers, she reaches over to grab a coffee mug. There were no coffee mugs on the table when Rogue set him down, and they would be out of reach if they were located on another table. (00:16:57)
'Til Death Do Us Part: Part 1 - S2-E1
Continuity mistake: When Rogue wakes up after Gambit kisses her, there is a pink pillow on the sofa. When the shot changes to her inadvertently kinetically charging the armrest with his powers, the pillow has disappeared. (00:16:23)
'Til Death Do Us Part: Part 1 - S2-E1
Revealing mistake: When Morph, disguised as Storm, is walking into the kitchen to talk to Jubilee, he appears out of thin air. (00:15:37)
'Til Death Do Us Part: Part 1 - S2-E1
Continuity mistake: When Gambit is trying to show Jubilee a card trick, he is on her left, and she slightly turns her head to face him. When the shot changes, she turns her head to face him again. (00:14:28)
'Til Death Do Us Part: Part 1 - S2-E1
Continuity mistake: When Wolverine is driving away from the mansion, there is a tree inside a circle hedge that wasn't there in previous shots. (00:13:40)
'Til Death Do Us Part: Part 1 - S2-E1
Continuity mistake: When Morph is watching Wolverine leave the mansion in his jeep, the jeep is missing in the first shot. (00:13:40)
'Til Death Do Us Part: Part 1 - S2-E1
Continuity mistake: During the fight in the streets against the Friends of Humanity, the pink stripes on Gambit's pants are missing until the last shot of the scene when he, Beast and Wolverine are fleeing, and even then, they disappear and reappear as he is running. (00:11:20 - 00:12:48)
'Til Death Do Us Part: Part 1 - S2-E1
Continuity mistake: When Wolverine is slicing off the roof of the car, he is first shown to be running his claws down the center. A couple of shots later, he is cutting a square-shaped hole into the roof, with no tears going down the center. (00:12:17)
'Til Death Do Us Part: Part 1 - S2-E1
Continuity mistake: When Storm is talking to and walking towards Jubilee in the War Room, the TV that everyone was watching is suddenly off, and seems to have disappeared altogether, as no screen is visible. When the shot changes, the TV is back on, and the screen appears to be shorter and wider than first shown. When Xavier is leaving the room, the TV is off again, and the screen like before seems to have vanished. (00:09:16 - 00:10:02)
'Til Death Do Us Part: Part 1 - S2-E1
Audio problem: When the Friends of Humanity are approaching the mutant that looks like a werewolf, they are saying "No more mutants," and none of them are pressing their lips together to produce the "M" sounds when saying "more" and "mutants." (00:08:37)
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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