MenuBar Titles not showing in 4.2.1 - regression

[drekay]

Tested versions

• Reproducible in: 4.2.stable

System information

Mac OS - Godot v4.2.1.stable - Vulkan(Forward+) - dedicate

Issue description

System Information:
macOS Mojave 10.14.6
Macbook Pro

Description:
MenuBar titles are not showing for 4.2.1.
I am getting @Popmenu@8 label instead of the titles set using set_menu_title ()
This was working fine in 4.1.1
The menu shows ok inside the App Window when menu.prefer_global_menu = false

Steps to reproduce

• Create a new scene
• Add the following script to the node
• Run
• Repeat after uncommenting the marked line of code for global menu preference

extends Node3D

func _ready():
	# Create the main menu bar
	var menu_bar = MenuBar.new()
	add_child(menu_bar)
	
	# Create File menu
	var file_menu = PopupMenu.new()
	file_menu.add_item("New", 0)
	file_menu.add_item("Open", 1)
	file_menu.add_separator()
	file_menu.add_item("Save", 2)
	file_menu.add_item("Save As...", 3)
	file_menu.add_separator()
	file_menu.add_item("Quit", 4)

	# Add File menu as a child of MenuBar
	menu_bar.add_child(file_menu)
	# Set the title for the File menu
	menu_bar.set_menu_title(0, "File")

	#uncomment to add menu inside App Window
	#menu_bar.prefer_global_menu = false 

Minimal reproduction project (MRP)

Same as above.