Full Site Editing (FSE) - WPML Language Switcher Block Display Issue if no Navigation Block is used

Overview of the issue

If you are using the WPML Language Switcher Block with a Full Site Editing (FSE) theme and do not have a Navigation block present on your page, the Language Switcher Block may appear broken due to missing styles.

Workaround

Please, make sure of having a full backup of your site before proceeding.

• Add the following code to your theme’s functions.php file:

  add_action('init', function(){
  	wp_enqueue_block_style('wpml/language-switcher', [
  		'handle' => 'wp-block-navigation'
  	]);
  });