Notes for WP ticket #40878

40878.php

<?php

register_post_type(
	'nav_menu_item',
	[
		// Unlisted items remain unchanged.
		'map_meta_cap' => true,
		'capabilities' => [
			// Meta Capabilities.
			'edit_post'              => 'edit_post',
			'delete_post'            => 'delete_post',
			'read_post'              => 'read_post',
			// Primitive Capabilities.
			'read'                   => 'read',
			'delete_others_posts'    => 'edit_theme_options',
			'delete_posts'           => 'edit_theme_options',
			'delete_private_posts'   => 'edit_theme_options',
			'delete_published_posts' => 'edit_theme_options',
			'edit_others_posts'      => 'edit_theme_options',
			'edit_posts'             => 'edit_theme_options',
			'edit_posts'             => 'edit_theme_options',
			'edit_private_posts'     => 'edit_theme_options',
			'edit_published_posts'   => 'edit_theme_options',
			'publish_posts'          => 'edit_theme_options',
			'read_private_posts'     => 'edit_theme_options',
		],
	]
);

register_taxonomy(
	'nav_menu',
	'nav_menu_item',
	[
		// Unlisted items remain unchanged.
		'capabilities' => [
			'manage_terms' => 'edit_theme_options',
			'edit_terms'   => 'edit_theme_options',
			'delete_terms' => 'edit_theme_options',
			'assign_terms' => 'edit_theme_options',
		]
	]
);