Vulkan: Disabling shadows for an OmniLight or SpotLight will not apply until the scene is reloaded

[Calinou]

Godot version

4.0.dev (52e3f98)

System information

Fedora 34, GeForce GTX 1080 (NVIDIA 465.31)

Issue description

Disabling shadows for an OmniLight or SpotLight will not apply until the scene is reloaded. Until you reload the scene, an outdated version of the shadowmap will be used.

This bug has been around since April 2020 at least.

Steps to reproduce

• Add a PlaneMesh and a BoxMesh using two MeshInstance nodes so you can see shadows.
• Add an OmniLight3D node.
• Enable shadows on the OmniLight3D node. Move the light around.
• Disable shadows on the OmniLight3D node. Move the light around.
• Save the scene then use Scene > Reload Saved Scene.
• Do the above steps with SpotLight3D as well.

Minimal reproduction project

N/A