I Hate Cheaters, Hackers, Glitchers, Laggers and Liars. Only through Peace, Honour, ethics and Morality will we shape the Earth.
This is the sort of thing that can happen when someone doesn't test their code to ensure it's consistent. Rule 1 of coding: Can Happen, Will Happen...
If someone can do something in a certain way, they will, and if that means that it will cause a bug to occur, it will.