Ticket #27175: 27175.6.diff

src/wp-includes/default-filters.php

@@ -280 +280 @@
 add_filter( 'pre_option_gmt_offset','wp_timezone_override_offset' );
 
 // Admin Color Schemes
-add_action( 'admin_init', 'register_admin_color_schemes', 1);
+add_action( 'wp_default_styles', 'register_admin_color_schemes', 1 );
 add_action( 'admin_color_scheme_picker', 'admin_color_scheme_picker' );
 
 // If the upgrade hasn't run yet, assume link manager is used.

src/wp-includes/general-template.php

@@ -2099 +2099 @@
  * @since 3.0.0
  */
 function register_admin_color_schemes() {
-        $suffix = is_rtl() ? '-rtl' : '';
+        if ( ! is_admin() ) {
+                return;
+        }
+
+        $suffix = ( function_exists( 'is_rtl' ) && is_rtl() ) ? '-rtl' : '';
         $suffix .= defined( 'SCRIPT_DEBUG' ) && SCRIPT_DEBUG ? '' : '.min';
 
         wp_admin_css_color( 'fresh', _x( 'Default', 'admin color scheme' ),