Continuity mistake: When Luke removes Vader's mask, Anakin's eyebrows have been removed in the 2004 DVD. However, a part of his left eyebrow can still be seen in some shots, and it even changes size a few times. (01:55:50)
Suggested correction: It's not part of his eyebrow. It's a shadow.
Continuity mistake: When Leia wakes up in the woods, she sits straight up. In the next shot, she is still lying on the ground. This is best seen in the widescreen version. (01:00:25)
Continuity mistake: When Leia knocks out a scout trooper with a branch after being discovered on Endor, she is turning to the right. In the next shot, she has turned the other way.
Continuity mistake: When Vader's shuttle is approaching the Death Star, the crew in the control room of the Death Star are wearing black gloves. One of them then reaches forward to press a button, but in the close-up of his hand pressing the button, the hand is not wearing gloves at all. This can only be seen in the widescreen version. (00:02:25)
Continuity mistake: After Leia frees Han from the carbonite, she begins to put her hand on his face as she kisses him. As the first shot ends, her hand is on his jaw, but in the next shot, her hand is on his cheek. (00:19:10)
Continuity mistake: At the end of the scene when the Emperor and Darth Vader walks through the Death Star's hangar, you can see that the Emperor walks past a squad of grey suited commanders. But in the next shot there are only white dressed storm troopers and scout troopers on the right side of the Emperor. And if you compare the last shot in the scene with the earlier shots you can see differences in the soldiers' placements. (00:37:45)
Continuity mistake: When Luke pulls Vader away from the edge of the abyss, a wall can be seen behind them, quite close to them. But several times earlier in the movie, there was no such wall in this area of the Emperor's throne room. (01:52:40)
Continuity mistake: In the scene where Leia frees Han from the carbonite, there's a table on the right side of the room. The position and existence of the fruit and other objects lying on and around the table keep changing between shots.
Continuity mistake: When Vader is searching for Luke in the dark, as he says, "If you will not turn to the dark side, then perhaps she will." he is holding what appears to be Luke's lightsaber in his left hand. But when Luke ignites his sabre in the next shot, he somehow has it again. (01:48:10)
Continuity mistake: After the Death Star explodes, in the first shot of the Ewoks, a grey one is standing next to Chewbacca (who can be seen on the extreme right). In the next shot, this Ewok has disappeared, and another one is standing next to C-3PO. This Ewok has disappeared in the following shot, and a third one, who was nowhere to be seen in the previous shot, is now standing in front of Chewbacca. Also, C-3PO, Chewbacca and the Rebel next to him are standing in different positions between shots. (00:58:15)
Continuity mistake: During Luke and Vader's conversation on Endor, as Vader says, "That name no longer has any meaning for me," he is pointing the hilt of Luke's lightsaber at Luke's chest. In the next shot facing Luke, the hilt is nowhere to be seen, even though it should be, because of its position in the previous shot. (01:20:35)
Continuity mistake: When Jabba pulls Leia's chain in the sail barge, Bib Fortuna is standing on the right side of the screen, a few meters away. He then takes one step forward, but in the next shot he is suddenly standing behind Leia, as he's pushing her against Jabba. He was too far away from them in the previous shot to have reached them that quickly.
Continuity mistake: After Luke cuts off Darth Vader's hand, he turns his head to face the Emperor twice, once in the close-up and once in the wideshot. (01:53:10)
Continuity mistake: When they get ambushed in the shield generator complex, an imperial in black appears from the right of the screen in front of the ledge with the railing. Han throws the container in his hands at the imperial. If you notice, the imperial actually begins to jump over the railing before the box even hits him.
Continuity mistake: When Luke and Han are being executed on Tatooine, Han says his eyes are getting better but still bad. Then he looks directly at Luke and says "You're gonna die here." In the very next line of dialog, Han's head is turned a different way. It looks like it was a different shot.
Continuity mistake: In the scene of the rebels planting explosives in the bunker, the first shot shows someone with gloves planting an explosive. Then it cuts to a wide shot of Han's team and none of them are wearing that style of glove. (01:51:10)
Continuity mistake: When the Emperor is torturing Luke, in the shot after Luke groans, "Father, please", Vader and the Emperor are standing further away from each other than in the previous and following shots where both are visible. (01:51:20)
Continuity mistake: After Leia removes her helmet in Jabba's palace, her hair changes on the right side of her head, depending on the camera angle.
Continuity mistake: As Boba Fett nods to the disguised Leia after the latter turns off the thermal detonator, his costume is reversed due to the negative being flipped. The easiest part of his costume to see this on is his antenna, which is on the left-hand side of his head, whereas normally it would be on his right.
Continuity mistake: When Wicket sits down next to Leia on the log, he's holding his spear straight up. In the next shot, it is pointing downwards. (01:01:35)