diff --git a/src/wp-includes/class-wp-customize-manager.php b/src/wp-includes/class-wp-customize-manager.php
index 92f5a15c31..dd71ede82d 100644
--- a/src/wp-includes/class-wp-customize-manager.php
+++ b/src/wp-includes/class-wp-customize-manager.php
@@ -735,9 +735,6 @@ final class WP_Customize_Manager {
 			'activePanels' => array(),
 			'activeSections' => array(),
 			'activeControls' => array(),
-			'l10n' => array(
-				'loading'  => __( 'Loading...' ), // no ellipsis
-			),
 		);
 
 		if ( 2 == $this->nonce_tick ) {
diff --git a/src/wp-includes/js/customize-preview.js b/src/wp-includes/js/customize-preview.js
index 29341d7721..cfda0edf98 100644
--- a/src/wp-includes/js/customize-preview.js
+++ b/src/wp-includes/js/customize-preview.js
@@ -124,11 +124,9 @@
 		// Display a loading indicator when preview is reloading, and remove on failure.
 		api.preview.bind( 'loading-initiated', function () {
 			$( 'body' ).addClass( 'wp-customizer-unloading' );
-			$( 'html' ).prop( 'title', api.settings.l10n.loading );
 		});
 		api.preview.bind( 'loading-failed', function () {
 			$( 'body' ).removeClass( 'wp-customizer-unloading' );
-			$( 'html' ).prop( 'title', '' );
 		});
 
 		/* Custom Backgrounds */