Unity transform traverser BeforeSelf/AfterSelf don't get any object when transform at scene root

[Tsuku-Yomi]

In following case, Current transform traverser 's BeforeSelf / AfterSelf can't get prev / next transform

with script

public class TrasveralTest : MonoBehaviour
{
    void Start()
    {
        Debug.Log($"Scene Root Gos =>{String.Join(",",gameObject.scene.GetRootGameObjects().Select(go=>go.name))}");
        var currentGo = GameObject.Find("Current");
        Debug.Log($"BeforeSelf Gos=>{String.Join(",",currentGo.transform.AsTraverser().BeforeSelf().Select(tr => tr.gameObject.name).ToArray())}");
        Debug.Log($"AfterSelf Gos=>{String.Join(",", currentGo.transform.AsTraverser().AfterSelf().Select(tr => tr.gameObject.name).ToArray())}");
    }
}

Not sure if it is an expected behavior , if it isn't, I'd be happy to fix it

[neuecc]

Thank you for the report.
I see, this is indeed an issue that needs to be fixed!