Ticket #41471: 41471.diff

src/wp-includes/class-walker-page-dropdown.php

@@ -61 +61 @@
                 }
 
                 $output .= "\t<option class=\"level-$depth\" value=\"" . esc_attr( $page->{$args['value_field']} ) . "\"";
-                if ( $page->ID == $args['selected'] )
+                if ( $page->{$args['value_field']} == $args['selected'] )
                         $output .= ' selected="selected"';
                 $output .= '>';