Issues with ParallaxBackground (it just doesn´t appear)

Godot Version

godot-4.3

Question

I'm trying to use a parallax background in my project, but for some reason it doesn't work. The Sprite2Ds associated with ParallaxLayers are visible while I'm editing the level, but when I run the game it's as if they don't exist. How can I fix it?

It’s hard to tell with this information alone. Please provide screenshots of your scene tree, and any relevant code. Any information you give would be a great help.

Also, just in case you haven’t, please reference the documentation: 2D Parallax — Godot Engine (stable) documentation in English