Continuity mistake: When the sand worms pit out BB-8, we see a shot of the bottom of a downed AT-AT Walker's foot. The "toes" are visible and are a single piece with the foot fused to it, metal on metal, and the bottom of the toe is smooth and flat. But in the last shot of the episode, the bottom of the foot is shown and here the toe is not a solid piece with the foot, connoted by a hinge and joints with space. It has grooves and details on the bottom that are not smooth. More sand also appears mounded on the foot. (00:01:51 - 00:02:44)
Continuity mistake: The head of the AT-AT Walker that Rey gets on to escape the sand worm is shown twice. In the second shot, as the sand worm is leaving, the details on top of the Walker's head have vanished. The outward square protrusions and ridges are now a flat surface on the Walker's head. And one of the parts of its front-facing gun has disappeared. (00:02:24)
Continuity mistake: Once the sand worm leaves with the junk, Rey tells BB-8, "We are safe now." BB-8 then turns to look at her. Between shots, the three patches of blue slime on the side of his head change. In the first shot, they are all almost the same size as each other and shape like jelly beans. In the next shot, the top one is shaped like a guitar pick, the middle one has shrunk drastically, and the bottom one is now a triangle shape and overlapping the orange part of his head when it wasn't touching that before. (00:02:28)
Continuity mistake: After Rey gives the sand worm some junk to eat, it starts to turn around and leave while diving back down into the sand. There is a cut to a different angle as it's turning, and suddenly more of its tail is buried under the sand between shots. (00:02:24)
Other mistake: After Rey and BB-8 escape the sand worm, she throws it a piece of junk to eat, and it catches the junk in its teeth. As it slowly moves away, in several frames, the animation blocking doesn't match up right, where the top tooth holding the junk at several points is not holding the piece of metal at all. Instead, it shows the top of it suspended in the gap between two teeth and not secure. (00:02:23)
Continuity mistake: After BB-8 gets spit out by the worm, Rey runs and catches him. When it cuts to a close-up, a lot on him has changed. His antennae are reversed where the tall one was back with the short one forward then to the tall one forward, short one back. The large blue slime on the left of his head vanishes, more slime appears on the right side of his head, and the blue slime on his lower body changes and shrinks. And then the position of Rey's arms on him is different. (00:01:58)
Continuity mistake: Rey runs up along the sand worm's back and jumps off it. Between shots, the position of the worm's back is different. In the first shot, the uppermost humps of its armored shell are the highest point under its head, and its position suggests it's still partly reared up out of the sand despite the sand not being visible under it in that shot. Then, in the next shot, some humps further down its back are higher than the forward humps, and the worm is more flat across the ground. (00:01:56)
Continuity mistake: After the sand worm spits out BB-8, Rey jumps on top of it and runs across its back. In this shot, the colours on the worm are a little different. Whereas in all other shots its armoured shell was an orangish brown with tan colours, now it's an almost golden and brighter brown colour with a hint of green tint to it. The rest of its body and head are also overall lighter in colour. There has been no lighting change between shots. (00:01:55)
Continuity mistake: When the sand worm is punching up out of the sand to spit BB-8 out, several globs of sand are spraying in the air around it. In the side shot, the sand kicked up in the air has vanished. (00:01:51)
Continuity mistake: After Rey hits the sand worm with her staff, it rears up out of the sand and spits BB-8. Between shots of it coming up and then switching to a side view, suddenly BB-8's model is flipped like a mirror. Notably, the black marking on his underside is flipped, his eye and antenna are flipped around, and the blue slime on him is mirrored. (00:01:50)
Other mistake: When the sand worms pit out BB-8 and the staff is tossed, BB-8 does not cast a shadow under him, while Rey's staff does have a shadow. (00:01:51)
Continuity mistake: In the animation of Rey throwing her staff at the sand worm, her hand changes from being palm and fingers towards the camera to the back of her hand facing the camera in a single frame while holding the staff in the animation of throwing it. (00:01:47)
Continuity mistake: In the shot where Rey throws her staff and it lands hitting the sandworm, the large sand dune that was to her left has disappeared when it was there a couple of shots before. And she did not turn her body, only her head looking around. (00:01:43)
Continuity mistake: After the sand worm spits out BB-8, he has lots of blue slime on various parts of his mechanical body and eye. Moments later, when Rey catches him, the amount of slime on his eye is less and not as thick; several spots of blue slime have moved around or vanished, and some are different sizes. (00:01:58)
Continuity mistake: When the sand worm spits out BB-8 and launches Rey's staff, both BB-8 and the staff go flying towards the downed AT-AT walker. They start to separate in the air, with BB-8 flying further and faster than Rey's staff. Yet in the next shot, suddenly they are together in the air again. (00:01:50)
Continuity mistake: Rey throws her staff at the sand worm's location to free BB-8. When she does, her robe has a large loop of cloth hanging down behind her leg. Then, in the next shot after she throws the staff, suddenly that extra cloth loop is missing. (00:01:47)
Continuity mistake: After the sand worm drags BB-8 down under the sand, Rey runs up to the hole left behind. A couple of shots later, when she's looking around, still standing in the same spot, the hole and sand mound that she was next to have vanished. (00:01:43)
Other mistake: After the sand worm grabs BB-8 and pulls him under, Rey runs up to the hole. Yet in this shot, it shows her running up beside and then past the hole. When in the next shot, she's shown stopping right at the hole to look down into it. (00:01:34)
Continuity mistake: When Rey jams her staff into the sand worm's mouth, she and BB-8 turn around and run back the direction they came from. With that first shot showing a second trail in the sand, BB-8 is leaving next to the trail he made already. Two trails. Then, when the sand worm slams down to spit Rey's staff back at her, that shot shows BB-8 and her still running the direction they came from, but now there's only one trail behind BB-8, the new one he's leaving now. The old one has vanished. (00:01:14)
Continuity mistake: Just before Rey jams her staff into the worm's mouth, she pulls back with her elbows out. In the next shot, suddenly her arms are in a completely different position with both elbows down. (00:01:07)
