Script/path is not saved when saving a GDScript object as a sub resource with ResourceSaver

[paczek654321]

Tested versions

v4.3.stable.official [a06b0a0]

System information

Redot v4.3.stable - Arch Linux #1 ZEN SMP PREEMPT_DYNAMIC Sat, 18 Jan 2025 02:26:52 +0000 - X11 - Vulkan (Forward+) - dedicated AMD Radeon RX 7700 XT (RADV NAVI32) - AMD Ryzen 7 5700X 8-Core Processor (16 Threads)

Issue description

If a resource that has export variables with custom class types those properties are not loaded properly with load() (Previously saved with ResourceSaver). Seems to be related to godotengine/godot#32856

Steps to reproduce

• Make 2 custom resources
• Have one of them have a variable with the other one as its type
• Save the first resource
• Load it back
• See that the custom class property didn't load correctly

Minimal reproduction project (MRP)

resourcesaverbugreproduction.zip

[paczek654321]

The relevant code appears to be in this file.

[paczek654321]

Turns out this only affects classes created with the class keyword and classes created with class_name work as expected.

[paczek654321]

The issue seems to be that when a class is declared with class_name, saving it also saves an external resource containing the script path
example: [ext_resource type="Script" path="res://TestType.gd" id="1_ryveg"]
But when its declared with class a sub resource is created containing no additional info (like the source code)
example: [sub_resource type="GDScript" id="GDScript_qs7av"]
So the solution to this issue would be to include more data in the GDScript sub resource I think.