Unwanted prefab offset after parenting

For an RPG game I am making a status bar that is displaying pictures according to the buffs and debuffs applied to the character.

For that I instantiate a prefab, change the texture and parent it to the canvas of the character

Code (CSharp):

1. status = Instantiate(statusPrefab);
2. status.GetComponent<RawImage>().texture = statusTexture;
3. status.transform.SetParent(target.transform.GetChild(2));

After that I adjust the position with

Code (CSharp):

1. RectTransform rt = status.GetComponent<RectTransform>();
2. rt.localPosition = new Vector3(0f, 0.225f, 0f);

However, for some reason the instantiated prefab gets offset by (0.5, 0.1, 0) resulting in an actual position of (0.5, 0.325, 0).
To find the cause for the offset I tried various different things, but I couldn't find it.
I tried to counter it by making sure that the pivot and the anchor stayed the same. So, before setting the position I execute this code

Code (CSharp):

1. rt.pivot = Vector2.zero;
2. rt.anchorMin = Vector2.zero;
3. rt.anchorMax = Vector2.zero;
4. rt.position = Vector3.zero;
5. rt.localEulerAngles = Vector3.zero;
6. rt.localScale = Vector3.one;

That didn't change a thing and the only way I found to counter the offset is by specifically subtracting it like

Code (CSharp):

1. rt.localPosition = new Vector3(0f, 0.225f, 0f) - new Vector3(0.5f, 0.1f, 0f);

But I am not satisfied with this "solution" as it is really sloppy and random.

The prefab's components look like this:

 

There's a variant of Instantiate - you can pass in the desired parent as the second parameter, so you don't have to reparent it afterwards. That should do what you want.

 

That's neat. I will give it a try right away.
Edit: Did give me the same behavior. The problem persists. But at least I saved one line of code

 

There is grid layout component also.