Corrected entry: At the beginning of the movie, when the are showing "The Itchy and Scratchy Movie", Itchy launches the nuclear missiles which are initially spread apart but when they land in Scratchy's mouth they are all in one clump.
Corrected entry: Frink couldn't have perfected his acid drill without being outside the dome where it also is.
Correction: Another possibility is that he just perfected his acid drill but was separated from it by the dome.
Corrected entry: When the mob is outside the Simpsons' home, they say, "No we won't, we just want Homer! However, when they burst in, Krusty says, "Teeny, get the baby!
Corrected entry: In the mob scene the boyfriend of Milhouse's mother Luann is seen twice - he's somewhere in the middle, and also at the back of the mob.
Corrected entry: When Frink says he made an acid firing super drill, there are people next to him on both his left and right. In the next shot (where we see the acid firing super drill outside the dome), there aren't any people standing next to him on the right, just the left. (00:28:10)
Correction: Due to the camera angles it does appear to be the case. However, you will notice that just before the camera cuts to show the drill, all the people behind Frink are in a line. When we see the drill, the people are still in a line but the people furthest from the camera appear to be closer to Frink.
Corrected entry: When Homer returns home with Spider-Pig, Maggie's high chair is positioned to be facing the archway between the kitchen and living room. A few seconds later, after Marge realises Spider-Pig is the twisted tail, Marge says "I believe what happened in church was a warning about precisely this" and Maggie's high chair is suddenly positioned to face the fridge. (00:15:30)
Continuity mistake: When Homer is climbing the dome, there is a shot of the rope. No-one is climbing it, yet a few seconds before people were climbing the rope. (01:05:10)
Suggested correction: They didn't climb high enough to be visible. Homer was much higher than they were.
Corrected entry: Professor Frink says he has a machine that will burn through anything but it happens to be on the outside of the dome. Why didn't the Simpsons use this to make a hole in the dome when they found a way out?
Correction: Even if the drill was still there for the using, there is nothing in the movie that suggests if they even remembered it was there. They could have easily forgotten about it.
Correction: There is nothing to suggest the Simpsons even know how to use Frink's superdrill.
Correction: The EPA came to capture the family so they had to run away. By the time of return, there would have already been the security seen near the end of the film.
Corrected entry: When Grandpa is freaking out in church, Milhouse's dad Kirk is sitting directly behind Homer. But when Homer is looking through the Bible to try and help Grandpa, there is no sign of Kirk at all. (00:05:45)
Correction: Due to the angle of the camera he will not be visible when Homer is flicking through the bible.
Correction: You can't seriously expect perfect continuity watching a cartoon within a cartoon.
But then itchy and scratchy had to be made as part of the Simpson's movie so it's still part of the film making it a mistake.
Ssiscool ★
Wrong. This is not a mistake. It was fully intentional and done for comical purposes.