Accessing scene unique nodes in a static function from a different node causes error instead of returning null

[bend-n]

Godot version

ef02571

System information

ArchLinux x11

Issue description

Accessing a scene unique node like this:

class_name Class extends Node
static func get_label() -> Label:
	return %label

and then accessing that class later:

func _ready() -> void:
	Main.get_label().text = "hello world"

causes a strange error when in the editor, and a normal error when run directly.

ERROR: Node not found: "%label" (relative to "/root/main").
   at: get_node (scene/main/node.cpp:1364)

Instead of returning null.
As opposed to when using get_node:

SCRIPT ERROR: Cannot call method 'get_node' on a null value.
          at: get_label (res://main.gd:5)
SCRIPT ERROR: Invalid set index 'text' (on base: 'Nil') with value of type 'String'.
          at: _ready (res://control.gd:4)

Steps to reproduce

Run mrp or follow outlined steps

Minimal reproduction project

bug.zip

[KoBeWi]

The error should be something like this:

Seems like % and $ are not handled properly in static methods.