`Marker3D`s created by `@tool` scripts are not drawn

[ProgrammerOnCoffee]

Tested versions

Reproducible in: 4.4.1-stable, 4.0-stable

System information

Windows 11 - All renderers - AMD Radeon RX 5600 XT

Issue description

When a Marker3D is added to a node by a @tool script, the Marker3D will not be drawn in the 3D viewport.
Marker2Ds do not have this issue.

Steps to reproduce

1. Create a new 3D scene with a Node3D as its root
2. In the 3D viewport, under View, uncheck "Show Origin" or "View Origin", depending on your version
3. Attach a new, non-built-in script to the root node
4. Paste the following code into the script and then save it:

@tool
extends Node3D

func _ready():
	add_child(Marker3D.new())

5. Save the scene, close it, and re-open it

• The Marker3D will not be drawn

Minimal reproduction project (MRP)

N/A

[timothyqiu]

Gizmos are only shown for nodes whose owner is inside the current scene.

godot/editor/plugins/node_3d_editor_plugin.cpp

Line 8607 in e1b4101

if (edited_scene && (sp == edited_scene || (sp->get_owner() && edited_scene->is_ancestor_of(sp)))) {

This is since the open source of Godot.

[ProgrammerOnCoffee]

My mistake, thank you for clarifying.