Ticket #49694: 49694.diff

src/wp-admin/includes/class-wp-posts-list-table.php

@@ -1681 +1681 @@
                                                                 'post_type'         => $post_type_object->name,
                                                                 'selected'          => $post->post_parent,
                                                                 'name'              => 'post_parent',
+                                                                'id'                => $bulk ? 'bulk-edit-post-parent' : 'inline-edit-post-parent',
                                                                 'show_option_none'  => __( 'Main Page (no parent)' ),
                                                                 'option_none_value' => 0,
                                                                 'sort_column'       => 'menu_order, post_title',