Other mistake: When the Blob picks up the bucket of ice cream, he says "Oh boy, tutti frutti!", but the label on the bucket says "Vanilla." (00:03:50)
Other mistake: After Rogue knocks Gambit over, Gambit is in the foreground and Rogue is in the background. Despite this, the heel of Rogue's right boot appears in front of Gambit's left foot. (00:06:32)
Other mistake: During a flashback, Rogue is shown absorbing Pyro's mutant power and then creating fire out of thin air. However, Pyro does not have the ability to create fire, he can only control it. That's why he wears a flamethrower on the back of each hand.
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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