Continuity mistake: When Marian attempts to defend a man who's collapsed from exhaustion from the robot knights, when the knight says "Analysis suggests the peasant-creature is spent", the man goes from sitting up to bent over between shots. (00:17:53)
Continuity mistake: When Colonel Blue informs the team that radiation levels are getting dangerously high as they head for the Dalek's trionic power cells, the team's location inside the Dalek, shown on a computer screen, changes between shots. (00:25:16)
The Time of the Doctor - S7-E17
Other mistake: While looking around the Doctor's room, one of the children's drawings Clara passes by has the TARDIS in it... when the TARDIS has been absent for all of the 300 years the Doctor has spent on Trenzalore up to this point, so none of the pictures existing now should have the time machine present. And it's not a particularly weathered picture, either, suggesting it can't be from the beginning of his stay on the planet. (00:31:47)
The Time of the Doctor - S7-E17
Continuity mistake: When the Doctor teleports onto the Dalek ship and announces himself, he's holding up a broken Dalek eyestalk in the wide shot as he throws off his hood, but then in the close-up he throws the hood off again, with his arm lowered. Then he raises his arm again, with his arm bent at the elbow, only for a wide shot to have his arm sticking straight up, with his elbow straight. (00:00:55)
The Name of the Doctor - S7-E15
Continuity mistake: When the Doctor pulls the Intelligence's hand off his chin, Simeon's thumb is suddenly no longer touching his face. (00:25:56)
Continuity mistake: During the sepia-toned explanation of the Doctor and Clara's initial investigation into Sweetville, when they pose as a married couple to infiltrate the place, are accepted, and the Doctor says "The missus and I couldn't be more chuffed, could we love?" in a bad Northern accent, Clara's fake smile goes from closed-mouth to open-mouth between shots. (00:19:57)
Journey to the Centre of the TARDIS - S7-E12
Continuity mistake: When Clara asks the Doctor if he's putting the TARDIS on basic mode because she's a girl and he responds "No!", his hand moves from raised to resting on the console between shots. (00:01:39)
Continuity mistake: When Skaldak grabs Professor Grisenko's head and announces that Martian law decrees the destruction of the Earth, his hands change position on Grisenko's head between shots. (00:31:47)
Continuity mistake: When the Doctor, being held by two of the crewmen, explains that there's a geographical anomaly the sub can land on to halt its descent, the hand of the crewman holding his right arm disappears in a close-up, followed by the crewman himself disappearing in the next shot. (00:04:57)
Continuity mistake: After the Doctor gets hit in the head by a football, when he raises his arms defensively when Ellie Oswald comes over to see if he's all right, his arms switch positions between the wide shot and the close-up. (00:02:02)
The Bells of Saint John - S7-E8
Continuity mistake: When the Doctor tells Clara he's not going to budge from his spot, he puts his sonic screwdriver inside his jacket. After she responds that she'll just come to him, he's holding it out again. (00:21:32)
The Snowmen - S7-E7
Continuity mistake: When the Intelligence in Simeon's body is attacking the Doctor, the Doctor's left arm goes from pushing at Simeon's right shoulder to suddenly stretched along the floor in a shot from above. (00:54:48)
The Angels Take Manhattan - S7-E6
Continuity mistake: When Amy and Rory are arguing after he puts her left hand to his chest and she grabs his shirt, in close-ups of her, she has her right arm raised instead. (00:36:00)
The Angels Take Manhattan - S7-E6
Continuity mistake: When the Doctor comments on Amy and Rory kissing in public before Rory leaves to get coffee, he goes from holding his book in his lap to reading it and back between shots. (00:08:15)
The Snowmen - S7-E7
Continuity mistake: When Clara tests the solidity of the cloud the TARDIS is parked on, her right hand suddenly jumps to the railing of the staircase between shots. (00:18:14)
The Bells of Saint John - S7-E8
Continuity mistake: When Clara is talking to Mr. Maitland as he prepares to leave, the cordless phone she's holding switches hands. (00:05:38)
The Snowmen - S7-E7
Continuity mistake: When the Doctor offers Clara a TARDIS key, he's holding it differently between shots. (00:44:35)
Continuity mistake: After the Doctor reprograms the cubes, when he tells Amy and Rory that a massive energy wave is about to go through the spaceship, his right hand, holding the sonic, goes from raised to lowered. (00:39:20)
Continuity mistake: When the Doctor is telling Amy and Rory how he's going to reprogram the cubes, the sonic screwdriver disappears from his hand. (00:38:50)
Continuity mistake: When the Doctor is in the containment unit with a cube during the countdown, there's a shot from outside where another cube in another containment unit is in the background, not displaying the countdown that all of the cubes are supposed to be showing. (00:29:03)
Chosen answer: 1) When Stephen Moffat took over he ignored a lot of what had been developed before (there is not in-universe answer). 2) It would have killed Rose, so the Doctor absorbed the energy. His body regenerated before the energy could do a significant amount of damage that would prevent regeneration.