Continuity mistake: In the first shot of the scene Bail Organa, Yoda and Obi-Wan discuss the future of the twins, most of the holster of Bail Organa's blaster is visible, but in the next shot, most of it is covered by his cloak. (02:03:50)
Continuity mistake: At the beginning of the scene where Obi-Wan, Yoda and Bail Organa discuss the future of Anakin and Padmé's children, Obi-Wan's hand is positioned against his chin. The position of his hand, as well as his left arm, changes between shots. (02:03:50)
Continuity mistake: When Bail Organa hands Leia to his wife, Breha Organa, the floor around Breha is covered in shadow. In the close-up of Leia being held, there are no shadows, and the design of the floor is different. (02:07:20)
Continuity mistake: When Obi-wan arrives at Tatooine and about to give the baby (Luke) away we see that he has the baby under his cloak. In a wide shot as he is walking he removes his cloak from the baby. When it cuts to a close shot he removes it again. (02:07:35)
Continuity mistake: When Owen and Beru are standing next to each other at the end of the movie, in the shot facing them, they are standing closer together than in the previous shot. (02:08:05)
Continuity mistake: On Utapau, when Obi-Wan faces off with Grievous, Grievous sends 4 MagnaGuards against Obi-Wan. Obi-Wan Force-pulls something from the ceiling to crush the droids. But in the ensuing fight between Obi-Wan and Grievous, the ceiling thing and crushed droids are gone.
Continuity mistake: When Palpatine fights the four Jedi Masters, his lightsaber hilt changes from his to Anakin's and back again. This happens throughout the scene. [This mistake is pointed out in the text commentary.]
Continuity mistake: In the scene where Anakin returns to Padme's apartment after the fight at the Jedi temple, watch R2-D2 in his compartment in Anakin's ship as the camera angle changes. In some shots, R2's "legs" are flush with the hull of the ship, and in others, they are well above it.
Continuity mistake: When Palpatine is talking to Anakin in his office, there is a table at the end of the hall with a large object in the middle, and a gold cup on each side. When they leave the office and are talking in the hall, and a thin purple lamp/object appears on the end of it for a few shots, and vanishes whenever seen from then on.
Continuity mistake: When the Emperor and Yoda flip backwards out of the pod from the "kickback" of the Force lightning the Emperor falls onto the sloped side of the pod.When they show him again he is hanging on the side of the pod with handles.(If you look at the pods each has a sloped side and a part with guardrail or handle)
Continuity mistake: When R2 is at the terminal near the beginning, the two super battle droids start to walk over to him and their red dots are on the left hand side but when they get to R2 they have moved to the right hand side.
Continuity mistake: When Anakin chokes Obi-Wan, the sleeves of Obi-Wan's tunic move up and down his arms between shots, especially his right arm.
Continuity mistake: During the Sidious and Yoda battle, the number of missing pods off the wall isn't consistent between shots. Sometimes a few are missing, then a lot then back to a few.
Continuity mistake: During the Anakin vs Obi-Wan fight, there is one bit where they are balancing on a thin pole. The shot starts off above them and you can see that there is nothing underneath them. They take a few steps backwards while fighting, but then they both jump off on to one of the arms of the structure they are fighting on.
Continuity mistake: The position and existence of the dead bodies in the control centre on Mustafar keep changing between shots, especially during the duel between Anakin and Obi-Wan.
Continuity mistake: When Obi-Wan and Anakin are fighting on the table in the control centre, they are standing/crouching in a different position from the previous shot after every time they kick each other. For example, when Obi-Wan kicks Anakin for the second time, as the shot ends, both of his feet are on the table, but in the next shot, one of his feet are up again.
Continuity mistake: The scar over Anakin's eye changes throughout the movie. For example, when he is talking to Yoda about his premonition, the scar is different from the previous scene - the part below his eye moves slightly down and lengthens.
Continuity mistake: When Anakin and Padmé are talking on the couch after Anakin is appointed to the Jedi council, they keep changing position between shots, depending on the angle of the camera. The easiest way to see this is to watch the red cloth hanging behind them on the couch. In some shots it is behind Padmé, in other shots, it is behind Anakin.
Continuity mistake: In the scene where Luke and Leia are born, the blankets under the babies are arranged differently between several shots.
Continuity mistake: When Padmé is talking to Anakin on Mustafar, her right hand keeps changing position between shots.
Answer: Darth Vader has a special chamber in which parts of the suit can be removed for comfort. When he is not in the chamber he must wear it at all times in order to survive.