Created Animations only play half within Animator

I have created an animation within script (C#) that overrides an already Unity generated one. The issue I am hitting is that that the Animator seems to think that the animation itself is only 1 second long... But the animation is actually 2 seconds.

Below is the code I have created

 void Awake()
 {
     _items = this.gameObject.GetComponentsInChildren<Widget>().ToList<Widget>();
 
     // Clear all data in all the clips. These will be generated via code
     foreach (AnimationClip clip in _animation)
     {
         SetAnimationData(clip);
         
         clip.EnsureQuaternionContinuity();
     }
     
     _animator.Rebind();
 }
 
 private void SetAnimationData(AnimationClip clip)
 {
     clip.ClearCurves();
 
     if (clip.name == "Stage1")
     {
         StageOneAnimations(clip);
     }
     else if (clip.name == "Stage2")
     {
         StageTwoAnimations(clip);
     }
     else if (clip.name == "Stage3")
     {
         StageThreeAnimations(clip);
     }
 }
 
 private void StageOneAnimations(AnimationClip clip)
 {
     // Canvas Group Alpha
     clip.SetCurve("", typeof(CanvasGroup), "m_Alpha",
         AnimationCurve.Linear(0, 0, _timeBetweenSteps, 1));
 
     // Block Raycasts
     clip.SetCurve("", typeof(CanvasGroup), "m_BlocksRaycasts",
         AnimationCurve.Linear(0, 0, _timeBetweenSteps, 1));
 
     // Interactable
     clip.SetCurve("", typeof(CanvasGroup), "m_Interactable",
         AnimationCurve.Linear(0, 0, _timeBetweenSteps, 1));
 
     for (int i = 0; i < _items.Count; ++i)
     {
         RectTransform rect = _items[i].GetComponent<RectTransform>();
         clip.SetCurve(_items[i].name, typeof(RectTransform), "m_AnchoredPosition.y",
             AnimationCurve.Linear(_timeBetweenSteps, rect.anchoredPosition.y, _timeBetweenSteps*2, rect.anchoredPosition.y + (_movementScale*i)));
     }
 }
 

Is there anything you think I may be missing?

Note: This is using the 4.6 Beta; not sure if is a bug of this or it could be an issue with my code.