No Mutant Is an Island - S5-E4
Continuity mistake: When Sarah resuscitates Cyclops, they are by the edge of the swimming pool. When the shot changes to Cyclops blasting through the screen door, the pool is nowhere to be seen, nor is the puddle of water that was under Cyclops in the previous shot. (00:16:10)
No Mutant Is an Island - S5-E4
Continuity mistake: The layout of the living room in Killgrave's house varies depending on the shot. Sometimes the half-circle couch is next to a staircase and sometimes it is not. The piano is also in a different spot on the floor each time it is shown. There are also chairs that appear and disappear throughout the scene. (00:14:55)
No Mutant Is an Island - S5-E4
Continuity mistake: When Cyclops is talking to Rusty outside the orphanage, the sign for the orphanage is much smaller than what it was shown to be in a previous scene. (00:07:35)
No Mutant Is an Island - S5-E4
Continuity mistake: When Cyclops throws his uniform on the ground, it turns into a dark gray color and the yellow paraphernalia attached to it disappears. (00:03:40)
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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