When Rick Grimes is negotiating with the two police officers, Tyree and Sasha are supposed to be on the roof. From their POV, they can see Rick's back, the two police officers and the walker coming up, but,
when the camera switches to the POV of either the officers or looking at Rick, you never see Tyree or Sasha. No Police officer would ever stay under visible gun sight. Tyree and Sasha they would have been east to see even before they pulled up, they'd have at a minimum jumped in their squad car and pulled back or taken cover behind the doors.
At the end of the prior episode, Sasha was bleeding from a cut in her forehead, sustained when Bob slammed her into the window. There is no blood or cut visible on her forehead anymore.
The photo of Dawn and Hanson that Beth puts on the cabinet, changes angles between shots. Some shots its in line facing the edge of the cabinet and some shots its at more of a diagonal angle.
Chased by walkers, Gabriel veers off the path toward the church, but the walkers have already cut through the woods as if they knew he was heading there.
Due to the narrow hallway, trained officers would have seen Daryl's stepping forward and raising his gun as a threat to all of them and gunned him down.
Although in a coma moments earlier, Carol suddenly becomes well enough to travel with the group hundreds of miles into the unknown. - Something they had always found too difficult to do (even with everyone healthy.) - A main plot point/scenario of the entire series.