I add Tween Scale for a gameobject of UIPanel, There is only UIPanel & TweenScale for it,then i set value of From and to (0-----1), the scale run ok. but the position of the Panel also be Change from right&bottom of Screen to the Right postion. I can sure the Anchor of the Panel is center of the GameObject.
The scale Y is ok. only scale x look like from right to left!