diff --git a/wp-includes/class-wp-customize-manager.php b/wp-includes/class-wp-customize-manager.php
index 2653247aed..e556f5ee27 100644
--- a/wp-includes/class-wp-customize-manager.php
+++ b/wp-includes/class-wp-customize-manager.php
@@ -1198,6 +1198,18 @@ final class WP_Customize_Manager {
* @param string $id Panel ID to remove.
*/
public function remove_panel( $id ) {
+ $core_panels = array(
+ 'widgets',
+ 'nav_menus',
+ );
+ if ( in_array( $id, $core_panels, true ) ) {
+ $url = 'https://core.trac.wordpress.org/ticket/33552#comment:12';
+ _doing_it_wrong(
+ __METHOD__,
+ sprintf( __( 'Removing %1$s manually will cause PHP warnings. Use the customize_loaded_components
filter instead. See %2$s.' ), $id, $url ),
+ '4.5'
+ );
+ }
unset( $this->panels[ $id ] );
}
diff --git a/wp-includes/version.php b/wp-includes/version.php
index 77644935f7..e4f293e578 100644
--- a/wp-includes/version.php
+++ b/wp-includes/version.php
@@ -4,7 +4,7 @@
*
* @global string $wp_version
*/
-$wp_version = '4.5-alpha-36215';
+$wp_version = '4.5-alpha-36216';
/**
* Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.