Ticket #60835: 60835.diff

src/wp-includes/plugin.php

@@ -315 +315 @@
 
         $r = false;
 
+        /*
+         * Block the removal of the '_wp_filter_font_directory' callback from the `upload_dir` filter.
+         * This is a temporary solution to prevent plugins from removing
+         * the 'font_dir' filter and the /fonts directory.
+         * See https://core.trac.wordpress.org/ticket/60835 for more information.
+         */
+        if ( 'upload_dir' === $hook_name && '_wp_filter_font_directory' === $callback ) {
+                return $r;
+        }
+
         if ( isset( $wp_filter[ $hook_name ] ) ) {
                 $r = $wp_filter[ $hook_name ]->remove_filter( $hook_name, $callback, $priority );