Static Instance Preload Scene read corruption

[jlturner]

Godot version

v4.1.1.stable.official [bd6af8e]

System information

Godot v4.1.1.stable - macOS 13.5.1 - Vulkan (Compatibility) - AMD Radeon Pro 580X OpenGL Engine - Intel(R) Core(TM) i5-9600K CPU @ 3.70GHz (6 Threads)

Issue description

static_scene_corrupt.mov

static var scene: PackedScene = preload("res://example.tscn") in a script attached to a Node saved as example.tscn, when reloaded in Godot, makes the example.tscn file unable to be opened in Godot.

It does work when running your project however, and if that line is commented out in the script and the project reloaded, then the scene is editable again.

Steps to reproduce

Create the following files:

1. example.gd:

extends Node

static var scene: PackedScene = preload("res://example.tscn")

2. example.tscn: A scene with a Node root with the example.gd script attached.

Reproduce the error

1. Click Project -> Reload Current Project
2. Open example.tscn
3. Observe error alert Scene file 'example.tscn' appears to be invalid/corrupt.
4. Observe console output:

scene/resources/resource_format_text.cpp:283 - res://example.tscn:6 - Parse Error: 
  Failed loading resource: res://example.tscn. Make sure resources have been imported by opening the project in the editor at least once.
  scene/resources/packed_scene.cpp:92 - Condition "nc == 0" is true. Returning: nullptr
  editor/editor_data.cpp:880 - Index p_idx = 2 is out of bounds (edited_scene.size() = 2).
  editor/editor_data.cpp:683 - Index p_idx = 2 is out of bounds (edited_scene.size() = 2).
  editor/editor_data.cpp:745 - Index p_idx = 2 is out of bounds (edited_scene.size() = 2).

Minimal reproduction project

static_scene_bug_repro.zip

[dalexeev]

This is most likely a duplicate of one of #80877 tracked issues, but maybe there is some unique information. Please check #74253 (comment).

[jlturner]

Btw for whomever ends up looking into this:

It seems to occur with any preload'ed scene in a static var initialization.
static var test = preload("res://example.tscn") does it for me