Ticket #31749: 31749.patch

src/wp-admin/includes/template.php

@@ -1908 +1908 @@
                 $attributes = $other_attributes;
         }
 
-        $button = '<input type="submit" name="' . esc_attr( $name ) . '" id="' . esc_attr( $id ) . '" class="' . esc_attr( $class );
+        // Don't output empty name attributes.
+        $name_attr = $name ? ' name="' . esc_attr( $name ) . '"' : '';
+
+        $button = '<input type="submit"' . $name_attr . ' id="' . esc_attr( $id ) . '" class="' . esc_attr( $class );
         $button .= '" value="' . esc_attr( $text ) . '" ' . $attributes . ' />';
 
         if ( $wrap ) {