Other mistake: Eric gets shot while fighting with a group against the Saviors. Aaron carries him to a tree and leaves him so he can continue fighting. When Aaron comes back to check on him, Eric is gone and the gun is left behind. Aaron yells his own name instead of Eric's name. (00:33:30)
Suggested correction: He screams Eric, it just sounds a little odd so the subtitles got it wrong.
Revealing mistake: When Aaron is pinned down by the sewer zombie, the zombie actor's neck can be seen below his head mask.
Suggested correction: I went back and watched this scene several times, and I think the OP is mistaking Aaron's hand on the Walker's neck as the gap in the mask.
Other mistake: In the opening scene when the cop stops at the side of the road & walks between the truck & car you can see there is no engine or transmission on the truck lying on its side. (00:00:20)
Walk with Me - S3-E3
Character mistake: When Andrea asks the Governor his real name, a young girl in pink shirt is walking like a "walker" and abruptly shifts to normal gait.
Suggested correction: She was never walking like a "walker." She was wondering around like many of the other extras. She looks like she was waiting for her family and when the boys approach, she stops wondering around and walks towards wherever they live.
Continuity mistake: When the Governor first attacks the prison, he is standing on the driver's side but in front of the truck. Next, Michonne aims at the truck and now the black guy who was always with Martinez is shot dead on the driver's side. Then after that, you see he's alive again on the passenger side right before the other truck comes crashing through the gates with all the walkers inside.
Suggested correction: The man you're taking about is Shumpert aka "Bowman." He's was not shot dead. He dove for cover and is still alive. In fact, he's in at least a half dozen more episodes, including in season 4.
Continuity mistake: When the walkers come through the cars, most shots show Carl and Sophia to be under the same car. When Sophia is attacked by the walker, Carl is not there and Sophia is shown on her own in other shots as well. (00:19:25 - 00:20:05)
Suggested correction: They never get under the same car. When we see them first get under the cars, they are both seen getting under cars going in the same direction at the same time (they'd have to go in opposite direction to get under the same car from both sides). Then in the first close up of Sophia, we can see Carl's head in the shadow and then a strip of sunlight indicating 2 separate cars.
Revealing mistake: When Morgan stabs the walker which is hanging from The Tower, the blade enters its lower head, but the blood can be seen coming from above the hairline. (00:25:30)
Suggested correction: I can see where the confusion is. If you watch it normal time, it looks like he stabs him in the cheekbone. But in slow motion, you can see the blade go into the top of the skull.
Pretty Much Dead Already - S2-E7
Revealing mistake: When Shane lets loose on the gang at the barn about the two walkers Hershel and Rick just brought out from the woods, he fires several shots into the female walker's torso, as he screams at Rick about them not being human. Then subsequently fires two shots at her head. Yet she is still moving when she should have dropped. As ANY blow to the brain kills instantly. But she doesn't drop until Shane dramatically moves right up to her and shoots her in the forehead.
Suggested correction: Those two shots were actually into the torso. He fired three into the torso, paused, two more into the heart and lungs, paused, then two more into the torso before he put one in the head.
Character mistake: While Hershel is sitting at the bar talking about what happened at the barn, he tells Rick what he was thinking about as he watched Rick run across the field, carrying Carl, who'd gotten shot. But it was Maggie who'd witnessed this through binoculars, and then yelled for Hershel.
Suggested correction: And he came outside to see Rick running across the field with Carl. No mistake.