Fields containing multibyte strings, don't get trimmed properly

Hello,

I have a view and I have adjusted the Teaser's properties in a way that it should be trimmed after some characters -E.g. 50- and on words boundaries.

When I enter texts in English language in the body, Views module finds the word boundaries properly and trims it; but when I enter multibyte text in there from another language -Persian in my case- it doesn't trim on word boundaries and trim the text into a zero length string. Seems the module cannot see the Space characters in the text.

Here is the View export:

$view = new view;
$view->name = 'sticky_news';
$view->description = '';
$view->tag = '';
$view->view_php = '';
$view->base_table = 'node';
$view->is_cacheable = FALSE;
$view->api_version = 2;
$view->disabled = FALSE; /* Edit this to true to make a default view disabled initially */
$handler = $view->new_display('default', 'Defaults', 'default');
$handler->override_option('fields', array(
  'field_picture_fid' => array(
    'label' => '',
    'alter' => array(
      'alter_text' => 0,
      'text' => '',
      'make_link' => 0,
      'path' => '',
      'alt' => '',
      'prefix' => '',
      'suffix' => '',
      'help' => '',
      'trim' => 0,
      'max_length' => '',
      'word_boundary' => 1,
      'ellipsis' => 1,
      'html' => 0,
    ),
    'link_to_node' => 1,
    'label_type' => 'none',
    'format' => 'newspic_linked',
    'multiple' => array(
      'group' => TRUE,
      'multiple_number' => '',
      'multiple_from' => '',
      'multiple_reversed' => FALSE,
    ),
    'exclude' => 0,
    'id' => 'field_picture_fid',
    'table' => 'node_data_field_picture',
    'field' => 'field_picture_fid',
    'override' => array(
      'button' => 'Override',
    ),
    'relationship' => 'none',
  ),
  'title' => array(
    'label' => '',
    'alter' => array(
      'alter_text' => 0,
      'text' => '',
      'make_link' => 0,
      'path' => '',
      'alt' => '',
      'prefix' => '',
      'suffix' => '',
      'help' => '',
      'trim' => 1,
      'max_length' => '50',
      'word_boundary' => 0,
      'ellipsis' => 1,
      'html' => 0,
    ),
    'link_to_node' => 1,
    'exclude' => 0,
    'id' => 'title',
    'table' => 'node',
    'field' => 'title',
    'override' => array(
      'button' => 'Override',
    ),
    'relationship' => 'none',
  ),
  'teaser' => array(
    'label' => '',
    'alter' => array(
      'alter_text' => 0,
      'text' => '',
      'make_link' => 0,
      'path' => '',
      'alt' => '',
      'prefix' => '',
      'suffix' => '',
      'help' => '',
      'trim' => 1,
      'max_length' => '50',
      'word_boundary' => 1,
      'ellipsis' => 0,
      'html' => 0,
    ),
    'exclude' => 0,
    'id' => 'teaser',
    'table' => 'node_revisions',
    'field' => 'teaser',
    'override' => array(
      'button' => 'Override',
    ),
    'relationship' => 'none',
  ),
));
$handler->override_option('sorts', array(
  'field_order_value' => array(
    'order' => 'ASC',
    'delta' => -1,
    'id' => 'field_order_value',
    'table' => 'node_data_field_order',
    'field' => 'field_order_value',
    'override' => array(
      'button' => 'Override',
    ),
    'relationship' => 'none',
  ),
  'created' => array(
    'order' => 'DESC',
    'granularity' => 'second',
    'id' => 'created',
    'table' => 'node',
    'field' => 'created',
    'override' => array(
      'button' => 'Override',
    ),
    'relationship' => 'none',
  ),
));
$handler->override_option('filters', array(
  'type' => array(
    'operator' => 'in',
    'value' => array(
      'news' => 'news',
    ),
    'group' => '0',
    'exposed' => FALSE,
    'expose' => array(
      'operator' => FALSE,
      'label' => '',
    ),
    'id' => 'type',
    'table' => 'node',
    'field' => 'type',
    'override' => array(
      'button' => 'Override',
    ),
    'relationship' => 'none',
  ),
  'sticky' => array(
    'operator' => '=',
    'value' => '1',
    'group' => '0',
    'exposed' => FALSE,
    'expose' => array(
      'operator' => FALSE,
      'label' => '',
    ),
    'id' => 'sticky',
    'table' => 'node',
    'field' => 'sticky',
    'override' => array(
      'button' => 'Override',
    ),
    'relationship' => 'none',
  ),
  'status' => array(
    'operator' => '=',
    'value' => '1',
    'group' => '0',
    'exposed' => FALSE,
    'expose' => array(
      'operator' => FALSE,
      'label' => '',
    ),
    'id' => 'status',
    'table' => 'node',
    'field' => 'status',
    'override' => array(
      'button' => 'Override',
    ),
    'relationship' => 'none',
  ),
));
$handler->override_option('access', array(
  'type' => 'none',
));
$handler->override_option('items_per_page', 1);
$handler = $view->new_display('block', 'Block', 'block_1');
$handler->override_option('block_description', '');
$handler->override_option('block_caching', -1);