New custom taxonomy not showing in the taxonomy field

Hello,

I created the custom taxonomy 'Workplace' using MB AIO builder. The custom taxonomy was registered and displayed in the classic post editor, menu and post admin column.

Note: It does not work in the Gutenberg editor of WordPress, even if 'show_in_rest' is set to true.

I used the custom field 'taxonomy' to show the new taxonomy 'workplace'. But the taxonomy field does not show the taxonomy 'workplace'.

<?php
add_action( 'init', 'your_prefix_register_taxonomy' );
function your_prefix_register_taxonomy() {
	$labels = [
		'name'                       => esc_html__( 'workplaces', 'your-textdomain' ),
		'singular_name'              => esc_html__( 'workplace', 'your-textdomain' ),
		'menu_name'                  => esc_html__( 'Workplaces', 'your-textdomain' ),
		'search_items'               => esc_html__( 'Search workplaces', 'your-textdomain' ),
		'popular_items'              => esc_html__( 'Popular workplaces', 'your-textdomain' ),
		'all_items'                  => esc_html__( 'All workplaces', 'your-textdomain' ),
		'parent_item'                => esc_html__( 'Parent workplace', 'your-textdomain' ),
		'parent_item_colon'          => esc_html__( 'Parent workplace', 'your-textdomain' ),
		'edit_item'                  => esc_html__( 'Edit workplace', 'your-textdomain' ),
		'view_item'                  => esc_html__( 'View workplace', 'your-textdomain' ),
		'update_item'                => esc_html__( 'Update workplace', 'your-textdomain' ),
		'add_new_item'               => esc_html__( 'Add new workplace', 'your-textdomain' ),
		'new_item_name'              => esc_html__( 'New workplace name', 'your-textdomain' ),
		'separate_items_with_commas' => esc_html__( 'Separate workplaces with commas', 'your-textdomain' ),
		'add_or_remove_items'        => esc_html__( 'Add or remove workplaces', 'your-textdomain' ),
		'choose_from_most_used'      => esc_html__( 'Choose most used workplaces', 'your-textdomain' ),
		'not_found'                  => esc_html__( 'No workplaces found', 'your-textdomain' ),
		'no_terms'                   => esc_html__( 'No workplaces', 'your-textdomain' ),
		'filter_by_item'             => esc_html__( 'Filter by workplace', 'your-textdomain' ),
		'items_list_navigation'      => esc_html__( 'Workplaces list pagination', 'your-textdomain' ),
		'items_list'                 => esc_html__( 'Workplaces list', 'your-textdomain' ),
		'most_used'                  => esc_html__( 'Most Used', 'your-textdomain' ),
		'back_to_items'              => esc_html__( 'Back to workplaces', 'your-textdomain' ),
		'text_domain'                => esc_html__( 'your-textdomain', 'your-textdomain' ),
	];
	$args = [
		'label'              => esc_html__( 'Workplaces', 'your-textdomain' ),
		'labels'             => $labels,
		'description'        => 'Workplaces is intended to represent the research institutions, universities, departments, research units and laboratories that offer academic positions.',
		'public'             => true,
		'publicly_queryable' => true,
		'hierarchical'       => true,
		'show_ui'            => true,
		'show_in_menu'       => true,
		'show_in_nav_menus'  => true,
		'show_in_rest'       => true,
		'show_tagcloud'      => true,
		'show_in_quick_edit' => true,
		'show_admin_column'  => true,
		'query_var'          => true,
		'sort'               => true,
		'meta_box_cb'        => 'post_tags_meta_box',
		'rest_base'          => '',
		'rewrite'            => [
			'with_front'   => false,
			'hierarchical' => true,
		],
	];
	register_taxonomy( 'workplace', ['post', 'page', 'project', 'scholars', 'emp', 'job'], $args );
}

To find out, I tested in troubleshooting mode with the default theme twenty twenty without any other plugins. But the same problem.

Help me to solve the problem.