unity. Why did the child object appear behind the parent (not even behind it, but in it)?

Question

Unity

Hello! I'm learning how to make games, I'm not experienced yet and I don't understand a lot. My problem: the child object of the gun started to be displayed behind the parent object both in the game and in the editor, although this was not the case before. Everything is in 2D. You can see it in the Prefab too:


If you look in 3D, you can see that it is displayed as if on a par with the parent:

The child object does not move along the Z axis at all. Only if you make this object not a child, then you can somehow edit it normally, but I would like to leave this gun as a child object.

The only thing is that if you open the prefab and change at least something on the child object, then it will display normally in the prefab, even if you return the values ​​\u200b\u200bthat were, but this does not change anything in the game and in the editor.



This happened when I loaded another scene, edited it as I needed, and after loading this scene, with a character and a gun, such a defect appeared.

I did not find on the Internet either a collision with this problem or a solution, so I got desperate and decided to ask myself.