Incorrect automatic fix for Drupal.Classes.FullyQualifiedNamespace.UseStatementMissing

The webprofiler sub-module of Devel has the following [blank lines removed]

namespace Drupal\webprofiler {
  /**
   * Class Stopwatch.
   */
  class Stopwatch extends \Symfony\Component\Stopwatch\Stopwatch {    <<< this is line 8
  }
}

Coder reports

8 | ERROR   | [x] Namespaced classes/interfaces/traits should be referenced with use statements
(Drupal.Classes.FullyQualifiedNamespace.UseStatementMissing)

The automatcic fix produces the patch:

+use Symfony\Component\Stopwatch\Stopwatch;
+
 namespace Drupal\webprofiler {
   /**
    * Class Stopwatch.
    */
-  class Stopwatch extends \Symfony\Component\Stopwatch\Stopwatch {
+  class Stopwatch extends Stopwatch {
   }

which results in:

use Symfony\Component\Stopwatch\Stopwatch;
namespace Drupal\webprofiler {
  /**
   * Class Stopwatch.
   */
  class Stopwatch extends Stopwatch {   <<< this is line 10
  }
}

and this fails with

PHP Fatal error:  Class 'Drupal\\webprofiler\\Stopwatch' not found in /devel/webprofiler/src/Stopwatch.php on line 10

Maybe in cases like this, where the class name matches the extending name PHPCS could report a warning, but not add the auto-fixer?