The Dark Phoenix (2): The Inner Circle - S3-E12
Continuity mistake: Rogue rips off Donald Pierce's cybernetic left arm, but when he is first shown running away, his right arm is the one that is missing. When he catches up with Sebastian Shaw in the secret passageway, his left arm is back to being the one missing. (00:18:30)
The Dark Phoenix (2): The Inner Circle - S3-E12
Audio problem: When Beast jumps off the balcony, the sound when he lands is similar to how it would sound if he was wearing shoes or boots, but he is barefoot. (00:19:00)
The Dark Phoenix (2): The Inner Circle - S3-E12
Continuity mistake: When the Dark Phoenix has broken Wyngarde's illusion, and he collapses to his knees, his hairtie has gone from being a blue band to a black bow tie. (00:19:15)
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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