GridMap is visible only on the first cull_mask layer

[tropical32]

Godot version:
Godot Engine v3.2.2.stable.custom_build

OS/device including version:
5.7.0-3-MANJARO, OpenGL ES 3.0 Renderer: GeForce GTX 1050 Ti/PCIe/SSE2

Issue description:
GridMap is only visible on the first Camera's cull_mask layer. Once the first bit of the camera's cull_mask is disabled the entire grid disappears. Since it's not extending VisualInstance wouldn't it make more sense to not react to cull_mask layers?

Steps to reproduce:

1. Launch the project below
2. Press the checkbox to toggle camera's first cull_mask bit

Minimal reproduction project:

gridmap-cull-master.zip

[giabeni]

Up! Lost some time trying to figure it out what's was I doing wrong...

[jamesdkay]

I also spent some time trying to figure out what was going on here. I need the ability to have some lights affect certain GridMaps but not others, but this issue also prevents you from using light cull masks with GridMaps. Does anyone know if this issue is related to #41374 or if the solution to that issue might resolve this one too?

[4CoDev]

I wanted to use different layers for different cameras to overlay the interior of a building on its exterior while maintaining the lighting, but it turns out this is not possible with gridmap :(

[escapade-games]

I have created a proposal that could potentially solve this bug, link is at godotengine/godot-proposals#5438.

[AThousandShips]

@CodeSmith32 @RobTheFiveNine Please don't bump without contributing significant new information. Use the 👍 reaction button on the first post instead.