Canvaslayers with the same layer don't follow the order on the tree because of the position of a node

[saierXP]

Godot version

4.2.dev4

System information

Windows 10.0.19045 - Vulkan (Mobile) - integrated AMD Radeon(TM) Vega 8 Graphics (Advanced Micro Devices, Inc.; 30.0.13023.4001) - AMD Ryzen 5 2500U with Radeon Vega Mobile Gfx (8 Threads)

Issue description

This issue also affects the rendering results at runtime.
Related to #25384?

Steps to reproduce

Download Minimal reproduction project.
Change the position of node N and observe the rendering result(Like in the gif animation above).

Minimal reproduction project

CanvasLayerBug.zip

[Sauermann]

According to the docs https://docs.godotengine.org/en/latest/tutorials/2d/canvas_layers.html

"CanvasLayers are independent of tree order, and they only depend on their layer number, so they can be instantiated when needed."

So CanvasLayers with the same layer-index seem to be ordered in a non-deterministic way.