WPML Language Switcher Block Incorrectly Identifies Default Language on Root Pages

Overview of the Issue

If you are using the Use directory for default language option and you add a Language Switcher Block on the root page, it erroneously points to the default language without the directory. (i.e '/' instead of '/en’).

This issue prevents users from selecting the default language on these specific pages.

Workaround

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

• Open …/wp-content/plugins/sitepress-multilingual-cms/classes/language-switcher/class-wpml-ls-model-build.php file.
• Look for line 64.
• Change:

  public function get( $slot, $template_data = [] ) {
  	$vars = [];
  
  	$vars['current_language_code'] = $this->sitepress->get_current_language();
  	$vars['languages']             = $this->get_language_items( $slot, $template_data );
  	$vars['css_classes']           = $this->get_slot_css_classes( $slot );
  	$vars['css_classes_link']      = self::LINK_CSS_CLASS;
  
  	$vars = $this->add_backward_compatibility_to_wrapper( $vars, $slot );
  
  	return $this->sanitize_vars( $vars, $this->allowed_vars );
  }

• For:

  public function get( $slot, $template_data = [] ) {
  	global $sitepress;
  	$vars = [];
  
  	$vars['current_language_code'] = $this->sitepress->get_current_language();
  	$vars['languages']             = $this->get_language_items( $slot, $template_data );
  	$vars['css_classes']           = $this->get_slot_css_classes( $slot );
  	$vars['css_classes_link']      = self::LINK_CSS_CLASS;
  	if(true === $sitepress->get_setting( 'urls' )['directory_for_default_language'] ) {
  		$vars['current_language_code'] = "root";
  	}
  	$vars = $this->add_backward_compatibility_to_wrapper( $vars, $slot );
  
  	return $this->sanitize_vars( $vars, $this->allowed_vars );
  }

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