Continuity mistake: When Gambit is watching Rogue being taken away, you can see the bars of their holding cell are only about a foot taller than Gambit. Later in the scene when Wolverine is attempting to free the X-Men from the cell, the bars now go all the way up to the ceiling. (00:14:13 - 00:14:48)
Continuity mistake: When Barbarus throws Wolverine onto the control panel, there are numerous buttons on it. Moments later when Vertigo is using her powers to disorient Wolverine, some of the buttons have disappeared. (00:14:56)
Continuity mistake: When Shanna sees Kazar hiding around the corner, the guard has his eyes open. When the shot changes, his eyes are suddenly closed. (00:15:13)
Continuity mistake: When Kazar and Shanna hug after he has freed her and the other captives, the lock on the cell door is missing. (00:15:30)
Continuity mistake: When Kazar and his people are storming the citadel, Morph and Xavier are spaced closer together than they were a couple of shots prior. (00:15:32)
Continuity mistake: When Wolverine frees Morph and Xavier from their bounds, Morph and Xavier are suddenly closer to Magneto than previously shown. (00:15:32 - 00:15:59)
Continuity mistake: When Vertigo is telling Wolverine to become one of Mr. Sinister's slaves, the red diamond on Sinister's chest is the same blue color as his outfit. (00:15:32)
Continuity mistake: After Ruckus prevents Kazar and his people from entering the citadel, Brainchild pulls a lever next to the door to seal them out. The lever in question wasn't there when Kazar and his people were first shown outside the door. (00:15:44)
Continuity mistake: When the X-Men have their powers restored, Jean Grey is behind Cyclops on his right, near the front of the cell. When they begin running out of the cell, Jean is now several feet directly behind Cyclops, closer to the back of the cell. (00:16:18)
Continuity mistake: The glove on Magneto's right hand disappears after Mr. Sinister blasts him in the back. (00:17:20)
Continuity mistake: When Xavier helps Morph overcome Mr. Sinister's mind control, Wolverine, Storm, and Gambit are standing behind Morph, and Magneto is lying on the ground. When the shot changes, Storm, Gambit, and Magneto have disappeared. (00:18:35)
Other mistake: When Gambit is consoling Rogue just before she is taken to be tortured, he tells her that he loves her, and states that he has never said that to anyone before. But as we learned earlier in the season, Gambit was engaged in his youth to Bella Donna. Surely he told her he loved her at some point. Rogue is aware of this aspect of Gambit's past, so he would have nothing to gain by lying to her about it.
Continuity mistake: When the X-Men regain their mutant powers, Jean Grey is suddenly wearing her uniform instead of the casual outfit she was wearing when she was abducted. In the next shot and for the remainder of the episode, she is back to wearing her casual outfit.
Continuity mistake: When Leech picks up the gun to try to defend himself from the Reavers, he is in an underground area with brick walls. When Lady Deathstrike grabs him and asks why she should spare him, they are now standing in a tunnel with walls similar to a cavern. (00:02:50)
Continuity mistake: When Leech is telling Lady Deathstrike that Callisto forced him to steal from her, she has her hand wrapped around his neck. When the shot changes, her hand is now gripping him by the chin. (00:03:00)
Continuity mistake: The scratch marks Lady Deathstrike makes in the alien ship don't appear until she mentions them. (00:04:00 - 00:05:15)
Continuity mistake: When Gambit presses the button to receive Leech's call, the antenna is on the left side of the phone. When the shot changes, the antenna is now on the right side. (00:05:42)
Continuity mistake: When Gambit is warning Wolverine that Leech's message could be a trap, the backboard of the basketball hoop is visible over his left shoulder. When the shot changes to Jubilee offering to help Wolverine, the backboard is visibly larger. (00:06:55)
Other mistake: When Wolverine is leaving to find Yuriko and Jubilee offers to tag along, the camera is fluttering in and out of focus for a few seconds. (00:07:01)
Continuity mistake: When Gambit scoffs at Jubilee's notion that the X-Men are a family, his irises which are normally red are now white. (00:07:25)
Answer: It appears a number of factors led to its demise. It was originally intended to air for 65 episodes, but its popularity extended that. However, there were continual production quality problems, issues regarding whether the content was suitable enough for children, as well as financial considerations that finally led to it being ended.
raywest ★