Strange language list in 1.60

To see strange behavior do this:
1) Add new language at page /administration/languages.aspx.
2) Edit just created language and uncheck option published.
3) After this you can`t see your language in /administration/languages.aspx list but this language exist in base.

I think that it will be right to show unpublished languages in languages list. Also there is Published column witch determinate language status.

It works fine. All uppublished languages are displayed in admin area.

This is stored proc in base:


ALTER PROCEDURE [dbo].[Nop_LanguageLoadAll]
  @ShowHidden bit = 0
AS
BEGIN
  SET NOCOUNT ON
  SELECT *
  FROM [Nop_Language]
  WHERE (Published = 1 or @ShowHidden = 1)
  order by DisplayOrder
END

so that i can`t see unpublished languages. Where  this functionality use? For what declared @showhidden?

Thank you for your answer.

It used in user inetface.
If delete WHERE (Published = 1 or @ShowHidden = 1) in admin you can see it too.