With Language Switcher block collapsed by default doesn't work

I confirm this bug... I will try to fix this soon.

EDIT:
I get it. The JS tests if they are an active menu in the block. If they are the block stay open. With the language switcher they are always an active menu so it stay open all the time.

      if (stat ==  4 || (cookieData[id] == 0 || (stat == 3 && cookieData[id] == undefined)) && !$(this).find('a.active').size()) {

Don't know what is the best way to fix that for the moment.. Perhaps a settings like "open if they are an active menu".

same problem with search_api_sorts.

Actually it seems that any link generate with a help of l()function will have .active class.

common.inc line 2423

  // Append active class.
  if (($path == $_GET['q'] || ($path == '<front>' && drupal_is_front_page())) &&
      (empty($options['language']) || $options['language']->language == $language_url->language)) {
    $options['attributes']['class'][] = 'active';
  }

small patch to fix that

This patch is not backwards-compatible.
This issue is being tackled in #2447245: Blocks are expanded with active menu link.