Win32::FindWindow problem

I think there might be a bug in find_windows() function. It returns numeric
values instead of strings as shown below:

$VAR143 = bless( {
                   'basename' => '69',
                   'hwnd' => 65656,
                   'pid' => 1468,
                   'filename' => '67',
                   'windowtext' => '80',
                   'classname' => '80'
                 }, 'Win32::FindWindow' );