Look, I hate to pick on Pixar and their near-perfect Toy Story franchise, but there's one thing that has plagued fans of Woody and Buzz for years.
In the original Toy Story, we learn that the toys are not allowed to let the humans know that they're alive, which makes sense. However, when Andy walks into the room, all of the toys freeze and play dead, including Buzz.
Though not exactly a plot hole, I, along with many others are still puzzled as to why Buzz would play dead if he thought that he was a real space ranger. If you recall, Buzz doesn't know that he's a toy, at least not initially. Yet, every time a human enters the room, he plays dead.