Monobehaviour on a GameObject running twice for some reason and yielding 2 different outcomes

Questions & Answers
1

I have a player object with this bit of code on a script:

private void Awake()
{     
            if (Once == false)
           {
                slider = GetComponent<Slider>();
                Debug.Log(slider);
                unitCanvasGroup = GetComponentInParent<CanvasGroup>();
                Debug.Log(unitCanvasGroup);
                Once = true;
            }
}

With this outcome on the console:

HealthBar (UnityEngine.UI.Slider)
UnityEngine.Debug:Log (object)
HealthBar:Awake () (at Assets/Scripts/HealthBar.cs:17)
UnitCanvas (UnityEngine.CanvasGroup)
UnityEngine.Debug:Log (object)
HealthBar:Awake () (at Assets/Scripts/HealthBar.cs:19)
Null
UnityEngine.Debug:Log (object)
HealthBar:Awake () (at Assets/Scripts/HealthBar.cs:17)
Null
UnityEngine.Debug:Log (object)
HealthBar:Awake () (at Assets/Scripts/HealthBar.cs:19)

Not only is it running twice when it shouldn’t, it is yielding two different outcomes. Reimported the project, unloaded the scene, got to it through a different path. This hasn’t really happened to me before all these years. The Gameobject is only once in the scene, the script is attached to it only once. Made a new scene with only said object, error persists. I’m at a complete loss.

2

I think deep in the hierarchy of that object, you have the same script attached again. Awake is only called once for Monobehaviors. The second run of the script returns two null objects. Makes me think the hidden script is deeper in hierarchy. It wasn’t able to find a Slider in the same level and a CanvasGroup in the parent.