Make sure the bounds of the component is correct.
Bounds of the component is not updated on every changed. For example, you add a new child to the list, children in the list will be rearranged in next frame.
If you want to access the correct child position immediatelly, call this function first.
FairyGUI (in FairyGUI.dll) Version: 126.96.36.199 (188.8.131.52)
public void EnsureBoundsCorrect()