One Man's Worth: Part 2 - S4-E2
Continuity mistake: When Fitzroy is draining energy from Xavier in order to create a time portal, he is completely surrounded by Bishop, Storm and Bantam. A few shots later there is no one standing around Fitzroy and Xavier. (00:18:35)
One Man's Worth: Part 2 - S4-E2
Continuity mistake: When the coffee shop owner is caught in Storm's whirlwind, his beard is flesh-colored. (00:03:35)
One Man's Worth: Part 2 - S4-E2
Revealing mistake: Bantam's irises turn completely white for a split-second when he is watching Fitzroy's recording. (00:17:35)
One Man's Worth: Part 2 - S4-E2
Audio problem: Storm's mouth is closed when she says "Fitzroy planted a bomb." (00:02:55)
One Man's Worth: Part 2 - S4-E2
Audio problem: When Forge says "It's damaged," his mouth is completely closed for the first word. (00:08:10)
One Man's Worth: Part 2 - S4-E2
Continuity mistake: When Bishop is setting the unconscious Xavier against the wall, his gun holster changes from brown to yellow. (00:19:00)
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.
BaconIsMyBFF