Just a list of things that may or may not be bugs, but perhaps should have a better explanation in the story.
Machines have enough power to scan credit cards and id cards, but not enough power to give your id cards back, or refrigerate their contents.
When on the staircase with no space for zombies to go, like on a cathedral outer staircase, if a zombie tries to follow you down a staircase, you will become paralyzed until you die.
Querns require 6 stones and a stick, even though they are really just one big stone with a stick.