When Hank drags Tommy over next to Billie - who's supposed to be dead - you can see her breathing.
As Shannon photographs the cocaine deal in the truck, one hears the camera click yet her finger does not click the button.
Georgia only uses a single license plate. Cars would not have a front license plate.
On the television news story that shows in the cabin the word Sheriff is misspelled as "Sherriff"
When Shannon enters the woods, the rain is clearly CG yet her shirt appears dry. As she writes in her journal, one sees actual wet spots appearing on the shoulders of her shirt, but it would have already been soaking wet,
Her name is listed as Shannon, but near the end Jack calls her Sharon.
Multiple times the pickup truck is referred to as not being visible from the road when it's just a few dozen feet away. One deputy even posts a campaign sign next to the road with the truck in full view.