Savage Land, Strange Heart (1) - S3-E8
Continuity mistake: When the X-Men are flying into the Savage Land, Beast is reading a book with a blank spine. After Wolverine tells Jubilee about Garokk, Beast's book suddenly has writing on the spine. (00:13:08)
Savage Land, Strange Heart (1) - S3-E8
Revealing mistake: After Wolverine says "I'll take a smell-see," Jubilee jump-cuts towards him before she begins walking. (00:13:52)
Savage Land, Strange Heart (1) - S3-E8
Audio problem: When Kazar is saying "That should hold him for a while" after trapping the T-rex in the pit, his mouth isn't moving. (00:14:46)
Savage Land, Strange Heart (1) - S3-E8
Continuity mistake: When Beast catches Rogue after Sauron tosses her, her black headband briefly turns white. (00:17:52)
Savage Land, Strange Heart (1) - S3-E8
Continuity mistake: Wolverine's arms are yellow when Beast catches him. (00:18:05)
Savage Land, Strange Heart (1) - S3-E8
Factual error: The amount of rubble that falls onto Sauron would have easily killed him, as his mutant powers do not include the ability to be impervious to heavy damage. (00:18:30)
Savage Land, Strange Heart (1) - S3-E8
Plot hole: When Kazar discovers that Sauron is really his friend Karl Lykos, Lykos reveals that he was turned into Sauron by Mr. Sinister. However, in the season 2 episode Mojovision when Sauron was attacking Shana, Magneto already knew who Sauron was. Magneto was the master of the Savage Land mutates years before Mr. Sinister was and hadn't been to the Savage Land for many years before then, so if Magneto already knew who Sauron was, then it couldn't have been Mr. Sinister who created him. (00:19:46)
Savage Land, Strange Heart (1) - S3-E8
Audio problem: When Wolverine says "On the other hand...", his mouth is wide open for the entire line. (00:20:25)
Savage Land, Strange Heart (2) - S3-E9
Revealing mistake: When Storm is saying "Rain, lightning, thunder," the flashing green effect on her eyes sometimes appears on her cheeks instead. (00:02:21)
Savage Land, Strange Heart (2) - S3-E9
Continuity mistake: After Storm destroys the statue of Garokk, his ethereal form petrifies the surrounding area. When it changes to a wider shot, the land is back in its original state. (00:03:30)
Savage Land, Strange Heart (2) - S3-E9
Revealing mistake: When Rogue is saving Jubilee and Wolverine from the stampede of dinosaurs, you can see that the dinosaurs behind them are simply gliding across the screen. (00:04:30)
Savage Land, Strange Heart (2) - S3-E9
Continuity mistake: When Rogue is walking towards Beast after he has sedated Storm, there is a hut directly to her right. When the shot changes, the hut has disappeared. (00:07:41)
Savage Land, Strange Heart (2) - S3-E9
Other mistake: When Rogue tells Beast that the word "Zaladane" kept popping in and out of her head when she and Sauron made physical contact, a border roughly in the shape of the letter "D" appears around her mouth. (00:08:08)
Savage Land, Strange Heart (2) - S3-E9
Continuity mistake: When Wolverine places his hand on Storm's head, her eyes are open. When the shot changes, her eyes are closed. When the shot changes again, her eyes are open again. (00:08:25)
Savage Land, Strange Heart (2) - S3-E9
Continuity mistake: When Beast is holding up Storm's arm and saying "Crisis contained," his white fingernails have been colored the same blue as his fur. (00:09:25)
Savage Land, Strange Heart (2) - S3-E9
Continuity mistake: When the giant monolith of Garokk forms out of the mountain, the markings around its eyes are red. In subsequent shots, the markings are now the same gray color as the rest of the monolith. (00:13:18)
Savage Land, Strange Heart (2) - S3-E9
Continuity mistake: The edges of the chasm that Jubilee hangs from go from being uneven to straight-lined. (00:13:40)
Savage Land, Strange Heart (2) - S3-E9
Continuity mistake: When Storm breaks off communication with Beast, the animation suggests that she is removing the communicators from her chest, but they remain in place. A couple of shots later, they are completely gone. They then reappear and disappear throughout the rest of the episode. Note: this mistake may only apply to the version of the episode that appears on the DVD. In the version of the episode that appears on Disney+, Storm does indeed rip the communicators off her chest. (00:16:20)
Savage Land, Strange Heart (2) - S3-E9
Other mistake: When Storm is directing a surge of lightning at the monolith of Garokk after telling Rogue to stay back, the plume of smoke coming from the volcano in the background is completely motionless. (00:16:49)
Savage Land, Strange Heart (2) - S3-E9
Continuity mistake: When the fully regenerated Garokk emerges from the mountain, his loincloth is an orange-brown color. A couple of shots later, it is now grayish-brown. (00:17:14)
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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