title: Sprite scaling issue
body: <p>I got a CCSprite.</p>
  
  <p>I scale it to 1.89, and it seems I need a bit more to get my desired result. Therefore I scale it to 1.9 (0.01 more than before). How come that now the sprite is <em>much bigger by far</em> now?</p>
  
  <p>In fact, I tried to add some precision (I make it like 1.895 or something, but the difference is minimal or even inexistent).</p>