Continuity mistake: Ludo holds Sir Didymus up by his staff and promptly drops him on the ground. He gets up, whacks Ludo in the knee with his staff and then his plastic staff bends and folds over as it hits the knee. Yet in the following shots his staff is creaseless and straight again. (00:58:10)
Continuity mistake: After Sarah runs up the stairs and shouts, "I can't do anything right, can I?" in the next two close-ups of her stepmother, the foyer table stands on an area rug with multi floral at the edge, inner red floral and a center floral medallion. As the camera pans out in the next shot, the table stands on the medallion, whereas in the previous close-ups it stood farther over, on the red. (00:05:35)
Continuity mistake: The twin doors in the bedroom fly open, and as a result the curtains are opened and pulled behind each of the doors as the owl flies through. However in the close-up of the owl attacking Sarah the curtains are visible and they are now blowing in front of the open doorway. Then as Jareth's shadow is seen on the rug, it's clear that the curtains are pulled apart by their shadow, which is also the case in the next shot of Jareth standing in the doorway with the curtains indeed pulled behind the doors. (00:11:45)
Audio problem: Having reached her house after running home in the rain, Sarah's stepmother stands on the porch and we hear her say, "Oh, really," but her mouth does not move at all. (00:04:45)
Continuity mistake: When Sarah is telling the story to Toby, she stands in front of the mirror, and puts Toby's stripy hat on. In one shot, she pulls it to the back of her head, but in the next shot, it's pulled down on her head, as normal. (00:07:40)
Revealing mistake: Sarah walks over to Ludo as he hangs upside down. Just before she says, "Now, stop that," she takes a step back as Ludo growls and shakes his head around. On his upside down scalp inside his fur a metal clamp on the black material under the fur is visible. (00:43:05)
Revealing mistake: Sarah looks at Hoggle in her vanity mirror and he says, "Well why didn't you say so?" As Sarah starts to stand up it is obvious where the two shots are edited together with her back to the camera, so that at the end of this "one" shot, Sarah's room is filled with her new friends. Her vest's back ties and blouse sleeves are different in the two shots that are edited together as one. (01:35:35)
Continuity mistake: When Sarah first meets the Goblin King, she has on Camel colored semi-formal flat shoes, but when she starts the labyrinth, her shoes have changed to brown suede loafers. She didn't change her shoes beforehand.
Continuity mistake: In Sarah's fathers bedroom, the green chair that sits by the back doors changes position during the scenes, and the cushion and soft toy that sit on it often change their position as well. (00:08:05)
Visible crew/equipment: When the second rock that Ludo calls rolls towards Sarah, the wire attached to it is visible. (00:40:55)
Continuity mistake: When Sarah runs to the side of the 'bubble' and smashes the glass with a chair, you can see that the table and the chair that she uses aren't reflected in the glass as she runs up to it. (01:06:30)
Audio problem: In his throne room, Jareth starts to sing, "Dance, magic, dance..." In the overhead shot when they sing the words, "Put that magic spell on me," he kicks the little guy up, then in the next front shot when he sings the second line, "Jump, magic, jump," and just before and during which he throws Toby in the air, in all these shots either his lips do not reflect the words heard or his lips move and no sound is heard. (00:23:55)
Visible crew/equipment: First in Sarah's father's bedroom, as Jareth holds and flits the crystal back and forth in his hand, then at his castle as Jareth holds the crystals while sitting in the window and in the scene with the drifting stone as Jareth holds one crystal, objects are reflected upside down within the spheres. Studio lamps and its lights are visible, as well as reflections other than Jareth and Sarah. (00:12:40)
Continuity mistake: When Sarah is at the park reciting the Labyrinth play, she has stud earrings in each ear. When she arrives home and then argues with her mum, they have gone. (00:03:10 - 00:05:25)
Visible crew/equipment: In the Goblin city, Ludo calls the rocks and the rocks emerge. There is then a shot of a soldier on his stead, wearing orange armour, tumbling over as he gets hit by a rock. As he falls, the wires holding him are blatantly visible. (01:20:50)
Continuity mistake: Sarah goes to pick up the fairy that dropped right by the wall. But in the next shot, you see Sarah stand up with the fairy in her hands, and she is now standing quite a way from the wall. (00:14:55)
Continuity mistake: When Sarah first enters the labyrinth, and is running down the passage, the branches, bits of log and wood etc., change, disappear and reappear between different angled shots as she runs. (00:17:45)
Continuity mistake: When Jareth throws the snake at Sarah, from a back shot the snake goes over her shoulders and crosses over by her neck, but in the next front shot the snake is only in front of Sarah and isn't over her shoulders anymore. (00:13:00)
Continuity mistake: When Sarah, Hoggle, Ludo and Sir Didymus enter the center of the Goblin City, a cannonball is fired at them, but it misses and it hits a clean portion of one house's white wall. However in a previous shot, the same portion of wall was covered in a black grubby substance. (01:16:40)
Continuity mistake: At the gates to the Goblin City, when Hoggle jumps from the metallic robot, Sarah runs to his aid. In that overhead wide shot and in the following shots, her hair changes as she speaks with Hoggle. (01:17:55)
Answer: To add to that, the other door was supposed to lead her to certain death, and technically the oubliette wasn't exactly certain death.