Program: 306
Project: 306
Buggy source:
Event copyEvent(Event e){
  if (e instanceof PlaySoundEvent) {
    return e;
  }
 else   if (e instanceof BindButtonEvent) {
    BindButtonEvent originalEvent=(BindButtonEvent)e;
    BindButtonEvent newEvent=createNewBindButtonEvent(originalEvent);
    newEvent.prepare(originalEvent.getId(),originalEvent.getState(),originalEvent.getDelta());
    inputEventSetup(newEvent,originalEvent);
    return newEvent;
  }
 else   if (e instanceof KeyEvent) {
    KeyEvent originalEvent=(KeyEvent)e;
    KeyEvent newEvent=createNewKeyEvent(originalEvent);
    newEvent.setState(originalEvent.getState());
    inputEventSetup(newEvent,originalEvent);
    return newEvent;
  }
 else   if (e instanceof BindAxisEvent) {
    BindAxisEvent originalEvent=(BindAxisEvent)e;
    BindAxisEvent newEvent=createNewBindAxisEvent(originalEvent);
    newEvent.prepare(originalEvent.getId(),originalEvent.getValue(),originalEvent.getDelta());
    inputEventSetup(newEvent,originalEvent);
    return newEvent;
  }
 else   if (e instanceof MouseAxisEvent) {
    MouseAxisEvent originalEvent=(MouseAxisEvent)e;
    MouseAxisEvent newEvent=createNewMouseAxisEvent(originalEvent);
    inputEventSetup(newEvent,originalEvent);
    return newEvent;
  }
 else   if (e instanceof CameraTargetChangedEvent) {
    CameraTargetChangedEvent originalEvent=(CameraTargetChangedEvent)e;
    return new CameraTargetChangedEvent(originalEvent.getOldTarget(),originalEvent.getNewTarget());
  }
 else   if (e instanceof CharacterMoveInputEvent) {
    CharacterMoveInputEvent originalEvent=(CharacterMoveInputEvent)e;
    return new CharacterMoveInputEvent(originalEvent.getSequenceNumber(),originalEvent.getPitch(),originalEvent.getYaw(),originalEvent.getMovementDirection(),originalEvent.isRunning(),originalEvent.isCrouching(),originalEvent.isJumpRequested(),originalEvent.getDeltaMs());
  }
 else   if (e instanceof MouseButtonEvent) {
    MouseButtonEvent originalEvent=(MouseButtonEvent)e;
    MouseButtonEvent newEvent=new MouseButtonEvent(originalEvent.getButton(),originalEvent.getState(),originalEvent.getDelta());
    newEvent.setMousePosition(originalEvent.getMousePosition());
    inputEventSetup(newEvent,originalEvent);
    return newEvent;
  }
 else   if (e instanceof MouseWheelEvent) {
    MouseWheelEvent originalEvent=(MouseWheelEvent)e;
    MouseWheelEvent newEvent=new MouseWheelEvent(originalEvent.getMousePosition(),originalEvent.getWheelTurns(),originalEvent.getDelta());
    inputEventSetup(newEvent,originalEvent);
    return newEvent;
  }
 else {
    return null;
  }
}

Fixed version (ground truth):
Event copyEvent(Event e){
  if (e instanceof PlaySoundEvent) {
    return e;
  }
 else   if (e instanceof BindButtonEvent) {
    BindButtonEvent originalEvent=(BindButtonEvent)e;
    BindButtonEvent newEvent=createNewBindButtonEvent(originalEvent);
    newEvent.prepare(originalEvent.getId(),originalEvent.getState(),originalEvent.getDelta());
    inputEventSetup(newEvent,originalEvent);
    return newEvent;
  }
 else   if (e instanceof KeyEvent) {
    KeyEvent originalEvent=(KeyEvent)e;
    KeyEvent newEvent=createNewKeyEvent(originalEvent);
    newEvent.setState(originalEvent.getState());
    inputEventSetup(newEvent,originalEvent);
    return newEvent;
  }
 else   if (e instanceof BindAxisEvent) {
    BindAxisEvent originalEvent=(BindAxisEvent)e;
    BindAxisEvent newEvent=createNewBindAxisEvent(originalEvent);
    newEvent.prepare(originalEvent.getId(),originalEvent.getValue(),originalEvent.getDelta());
    inputEventSetup(newEvent,originalEvent);
    return newEvent;
  }
 else   if (e instanceof MouseAxisEvent) {
    MouseAxisEvent originalEvent=(MouseAxisEvent)e;
    MouseAxisEvent newEvent=createNewMouseAxisEvent(originalEvent);
    inputEventSetup(newEvent,originalEvent);
    return newEvent;
  }
 else   if (e instanceof CameraTargetChangedEvent) {
    CameraTargetChangedEvent originalEvent=(CameraTargetChangedEvent)e;
    return new CameraTargetChangedEvent(originalEvent.getOldTarget(),originalEvent.getNewTarget());
  }
 else   if (e instanceof CharacterMoveInputEvent) {
    CharacterMoveInputEvent originalEvent=(CharacterMoveInputEvent)e;
    return new CharacterMoveInputEvent(originalEvent.getSequenceNumber(),originalEvent.getPitch(),originalEvent.getYaw(),originalEvent.getMovementDirection(),originalEvent.isRunning(),originalEvent.isCrouching(),originalEvent.isJumpRequested(),originalEvent.getDeltaMs());
  }
 else   if (e instanceof MouseButtonEvent) {
    MouseButtonEvent originalEvent=(MouseButtonEvent)e;
    MouseButtonEvent newEvent=new MouseButtonEvent(originalEvent.getButton(),originalEvent.getState(),originalEvent.getDelta());
    newEvent.setMousePosition(originalEvent.getMousePosition());
    inputEventSetup(newEvent,originalEvent);
    return newEvent;
  }
 else   if (e instanceof MouseWheelEvent) {
    MouseWheelEvent originalEvent=(MouseWheelEvent)e;
    MouseWheelEvent newEvent=new MouseWheelEvent(originalEvent.getMousePosition(),originalEvent.getWheelTurns(),originalEvent.getDelta());
    inputEventSetup(newEvent,originalEvent);
    return newEvent;
  }
 else   if (e instanceof GetMaxSpeedEvent) {
    GetMaxSpeedEvent originalEvent=(GetMaxSpeedEvent)e;
    GetMaxSpeedEvent newEvent=new GetMaxSpeedEvent(originalEvent.getBaseValue(),originalEvent.getMovementMode());
    newEvent.setModifiers(originalEvent.getModifiers());
    newEvent.setMultipliers(originalEvent.getMultipliers());
    newEvent.setPostModifiers(originalEvent.getPostModifiers());
    return newEvent;
  }
 else {
    return null;
  }
}