The large menus left by the waitress on the table of the Hilltop Cafe disappear.
When Summer and Jason find a survivor in the house, he is bitten by one of the zombies and then turns. When he does turn his eyes turn white, but then, when the pair are trying to move him, his eyes have returned to their natural brown, before then going back to white in the next close up.
It's hard to tell what's intentional and what isn't here, but the nails in Jason's shoulder pads bend when he shields the girl from the shotgun blast, in slow motion yet, and the shotgun blasts hit the truck with zero penetration like bean bags.