Ticket #45302: 45302.patch

src/wp-includes/script-loader.php

@@ -2284 +2284 @@
  * @global WP_Screen $current_screen
  */
 function wp_enqueue_registered_block_scripts_and_styles() {
-        global $current_screen;
+        $current_screen = get_current_screen();
+        $is_editor      = $current_screen instanceof WP_Screen && $current_screen->is_block_editor();
 
-        $is_editor = ( is_admin() && $current_screen->is_block_editor() );
-
         $block_registry = WP_Block_Type_Registry::get_instance();
         foreach ( $block_registry->get_all_registered() as $block_name => $block_type ) {
                 // Front-end styles.