RaycastTargetをオフるやつ

RaycastTargetDisabler.cs

using UnityEditor;
using UnityEngine.UI;

public static class RaycastTargetDisabler
{
    [MenuItem("GameObject/Disable RaycastTarget", false, -1)]
    public static void Disable()
    {
        var selected = Selection.activeGameObject;
        if (!selected)
        {
            return;
        }

        var graphics = selected.GetComponentsInChildren <Graphic>(true);

        foreach (var graphic in graphics)
        {
            if (!graphic.GetComponent <Button>())
            {
                graphic.raycastTarget = false;
            }
        }
    }
}