title: libgdx actor won't change position
body: <p>If an actor is moved by its own <code>actor.act()</code> method, it updates the position flawlessly. But if I move the actor by a <code>group</code>, which contains the actor, with the <code>moveBy()</code> method or a <code>moveBy</code> action, the actor moves, but its getX() and getY() values stay the same as before the movement. Is there a way for the actor to update its position, when he is not being moved by its <code>act()</code> method, but rather from a outside method?</p>
  
  <p>The snippet looks like this:</p>
  
  <pre><code>//Bounds are set in the MyActor class, which extends Actor
  MyActor myActor= new MyActor();
  Group group = new Group();
  group.addActor(myActor)
  
  //stage already created
  stage.addActor(group);
  
  //Doesn't update X and Y, when calling myActor.getX(), myActor.getY()
  group.moveBy(x,y);
  </code></pre>