Continuity mistake: When Tarfful uncovers the escape pod for Yoda he throws the bushes to the ground next to the pod. When Yoda enters the top the bushes are gone. (01:22:20)
Continuity mistake: In the first shot of the scene where Yoda leaves Kashyyyk, as Tarfull begins to walk towards Chewbacca, Yoda is several metres away from them. In the next shot, he is much closer to them, and Tarfull, who is still walking, is further away from Chewbacca than in the previous shot. (01:22:20)
Continuity mistake: When Yoda's escape pod takes off you can see the flaps on the pod being pulled in. Two shots later they are pulled in again. (01:22:55)
Continuity mistake: When Obi-Wan gets back to where he killed Grievous, in the overhead shot, you can see Grievous lying dead at least ten feet away from the ship. When it cuts to Obi-Wan climbing inside the ship Grievous is only a few feet away. (01:23:30)
Continuity mistake: In the first shot of the scene where Anakin visits Padmé before going to Mustafar, Padmé runs past a statue on the veranda. In the following close-up, she passes it again. (01:24:20)
Continuity mistake: When Anakin visits Padmé before going to Mustafar, as he says, "Have faith, my love." he's touching the side of her head. In the next shot, his fingers change position. (01:25:25)
Continuity mistake: When Obi-Wan and Yoda walk through the Jedi Temple after order 66, in the second shot, they are standing on a round circle on the floor, but in the previous shot, they were a few metres away from it. (01:30:40)
Continuity mistake: In the scene where Obi-Wan and Yoda find the dead Jedi younglings, in the first shot, there are no bodies on the stairs. But when Yoda says, "Killed not by clones, this Padawan.", you can see a dead body on the bottom of the stairs. (01:30:40)
Continuity mistake: When Obi-Wan and Yoda arrive at the Jedi temple to find all the slain Jedi, there is a wide shot showing Obi-Wan walking several feet ahead of Yoda. Obi-Wan then raises his hands and is about to remove his hood when it cuts and now Yoda is suddenly right next to Obi-Wan. (01:30:40)
Continuity mistake: When Obi-Wan and Yoda find the dead Jedi, some of the dead children lying on the floor where Obi-Wan and Yoda are standing are lying in a different position between shots. For example, watch the brown cloak of one of the Padawans near Obi-Wan. (01:30:40)
Continuity mistake: When Obi-Wan and Yoda find the dead Jedi in the Jedi Temple, in the first shot, there are several bodies on the floor in front of them. In the next shot, there are different bodies. (01:30:40)
Continuity mistake: In the beginning of Anakin and Padmé's conversation on Mustafar, as Padmé says, "I was so worried about you.", Anakin's hand is on her waist. In the next shot, his hand is on her back. (01:30:40)
Continuity mistake: When Anakin is at the Mustafar system wiping out everyone, before he kills the last droid, he kills someone near the panels. When he falls dead to the ground his scarf is lying on his back. When it cuts the scarf is hanging down over his arm. (01:31:40)
Continuity mistake: When the Emperor addresses the Senate, as he says, "In order to ensure the security and continuing stability", his hands are held at waist level. As the next shot begins, his hands are higher up. Then, when the Senate applauds, he begins to raise his hands. As the following shot begins, his hands are held in a much lower position. No one moves that quickly. (01:31:55)
Continuity mistake: In the scene where Anakin arrives on Mustafar and tells R2-D2 to stay with the ship, he pulls the hood of his robe over his head with two organic hands. His right hand should be mechanical. [This mistake is mentioned in the audio commentary: this shot is taken from a shot of Obi-Wan later in the film when leaving Padme's apartment. Still a mistake, though.] (01:32:55)
Continuity mistake: When the Emperor addresses the Senate, as he begins to raise his hands, Mas Amedda (the blue alien next to the Emperor) is holding a staff. In the next shot, his hand has moved much further down on the staff. (01:32:55)
Continuity mistake: When Obi-Wan and Yoda are about to leave the Jedi Temple and Obi-Wan says "Wait, Master, there is something I must know", Yoda stops. Notice the pattern on the floor under Yoda. When it cuts you can see from the pattern on the floor that Yoda has moved. (01:33:10)
Continuity mistake: During Anakin and Padmé's conversation on Mustafar, in the first shot, they are standing near some sort of container. They continue to stand in the same place in the following shots. When Anakin sees Obi-Wan and becomes furious, both of them take several steps away from the container, but when Anakin says, "You brought him here to kill me.", they are standing near it again. In the following shots, it is nowhere to be seen. (01:39:35 - 01:41:55)
Continuity mistake: When Anakin is choking Padme and lets her go, she falls to the ground. She lands a few feet away from the line on the floor. Two shots later she is lying on the line. She is unconscious so she couldn't have moved. (01:42:10)
Continuity mistake: After Anakin chokes Padmé, her right arm lies in front of her as she collapses, but in the next shot of her, her arm is resting across her stomach. (01:42:10)
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.