Ticket #47053: 47053.5.diff

src/wp-includes/default-filters.php

@@ -537 +537 @@
 add_action( 'admin_init', '_wp_admin_bar_init' );
 add_action( 'before_signup_header', '_wp_admin_bar_init' );
 add_action( 'activate_header', '_wp_admin_bar_init' );
-add_action( 'wp_footer', 'wp_admin_bar_render', 1000 );
+add_action( 'wp_body_open', 'wp_admin_bar_render', 0 );
 add_action( 'in_admin_header', 'wp_admin_bar_render', 0 );
 
 // Former admin filters that can also be hooked on the front end

src/wp-includes/general-template.php

@@ -2889 +2889 @@
  * @since 1.5.1
  */
 function wp_footer() {
+        /**
+         * Sets up the Admin Bar if the current theme does not use `wp_body_open`.
+         *
+         * @since 5.4.0
+         */
+        if ( ! did_action( 'wp_body_open' ) ) {
+                add_action( 'wp_footer', 'wp_admin_bar_render', 1000 );
+        }
         /**
          * Prints scripts or data before the closing body tag on the front end.
          *