@rpc custom_resource_name hides a global script class

[Vennnot]

Godot version

4.1.1

System information

Windows 10, Windows 11

Issue description

When calling a method, that has a parameter as a resource through .rpc or .rpc_id with allow_object_decoding turned on, Godot throws an error and the method body does not execute. The error is:

"Custom_resource_name hides a global script class" even if the custom resource name is something ridiculous that clearly doesn't hide anything.

For a more detailed error please see the attached project. This error does not happen if the method is called without .rpc or .rpc_id

Tangentially Related but not the same:

#82718
#67056
#68666

Steps to reproduce

-> Make sure to run two instances

-> Play

-> Host with one instance

-> Connect with the other

-> Then press in either the send info button

Minimal reproduction project

minimal.zip

[Ayekey]

For those that are struggling with this Issue.
My personal best workaround is currently:
Networking class:

func _on_player_connected(id):
	if multiplayer.is_server():
		var path = "user://tmp.res"
		ResourceSaver.save(world.world_map, path)
		var file = FileAccess.open(path, FileAccess.READ)
		world.set_rpc_map.rpc_id(id, file.get_buffer(file.get_length()))

Class containing the Resource:

@onready var world_map : WorldMap = WorldMap.new() : set = set_world_map

@rpc("any_peer", "call_remote", "reliable")
func set_rpc_resource(buffer):
	var path = "user://tmp.res"
	var file = FileAccess.open(path, FileAccess.WRITE)
	file.store_buffer(buffer)
	file.close()
	world_map = ResourceLoader.load(path)

It'd be nice to be able to do this without creating the temporary files beforehand.
(for simple Resources inst_to_dict()/dict_to_inst() works fine too)

[IfgiU]

The bug is still present in 4.2.1.

[dalexeev]

• Fixed by Core: Add typed array support for binary serialization #78219 and Core: Fix RefCounted handling in marshalls.cpp #90693 for future 4.3.