Strange behaviour when Sorting UIButtonKeys

[Quarkism]

So I thought It would be a good idea to extend UIButtonKeys with a context menu command to arrange the selectOnUp / selectOnDown automagically by looking at the componenets Y value. Strangly my attempt does not work. If the component's values are set, they are often out of order.

1.         [ContextMenu("ArrangeVertical")]
2.         public void ArrangeVertical()
3.         {
4.             var p = this.FindInParent<UIPanel>();
5.             var ts = p.GetComponentsInChildren<UIButtonKeys>(true);
6.  
7.             var ordered = ts.OrderByDescending(o => o.transform.position.y).ToArray();
8.  
9.             Debug.Log(ordered.Length);
10.  
11.             for (int i = 0; i < ordered.Length; i++)
12.             {
13.                 Debug.Log(i);
14.                 var comp = ordered[i];
15.  
16.                 if (i == 0)
17.                 {
18.                     comp.selectOnUp = ordered[ordered.Length - 1];
19.                     comp.selectOnDown = ordered[i + 1];
20.                 }
21.                 else if (i + 1 == ordered.Length)
22.                 {
23.                     comp.selectOnUp = ordered[i - 1];
24.                     comp.selectOnDown = ordered[0];
25.                 }
26.                 else
27.                 {
28.                     comp.selectOnUp = ordered[i - 1];
29.                     comp.selectOnDown = ordered[i + 1];
30.                 }
31.             }
32.         }

Not really a NGUI problem per-se, but has anyone else experienced strange editor behavior ?