Grouping field not "grouping" nodes

I have noticed this as well, using 6.x-2.6 Views and 6.14 Drupal. Grouping has been working well until a couple of days ago with no changes to my site, other than my doing some theming on CCK forms using template.php.

I'll move up to Views 6.x-2.x-dev or 6.x-3.x-dev and see if grouping returns.

I tested this exported view and I believe it is fixed by http://drupal.org/node/619884#comment-2218336

I hope no-one minds that I reopened this which was originally opened on Views 6.x-2.6. I am running an Acquia installation of D6.16 on my workstation for testing purposes, updated with Views 6.x-2.11. I'm running into exactly the problem described above. I've checked the patch described by merlinofchaos and it seems to be applied in this version also. Maybe I've done something wrong, but I really can't see what. The view is very basic, just displaying node titles for nodes keyed by a single vocabulary, sorting on the term and grouping by term. I've excluded the term itself from the display, so it only appears as the group title, but the group title is still getting displayed above every node, instead of once for all the nodes associated with that term.
Here is the code of the view:

$view = new view;
$view->name = 'rubric_node';
$view->description = 'Articles par rubrique - node';
$view->tag = 'Rubriques';
$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(
  'name' => array(
    'label' => 'Term',
    'alter' => array(
      'alter_text' => 0,
      'text' => '',
      'make_link' => 0,
      'path' => '',
      'link_class' => '',
      'alt' => '',
      'prefix' => '',
      'suffix' => '',
      'target' => '',
      'help' => '',
      'trim' => 0,
      'max_length' => '',
      'word_boundary' => 1,
      'ellipsis' => 1,
      'html' => 0,
      'strip_tags' => 0,
    ),
    'empty' => '',
    'hide_empty' => 0,
    'empty_zero' => 0,
    'link_to_taxonomy' => 0,
    'exclude' => 1,
    'id' => 'name',
    'table' => 'term_data',
    'field' => 'name',
    'relationship' => 'none',
    'override' => array(
      'button' => 'Override',
    ),
  ),
  'title' => array(
    'label' => 'Title',
    'alter' => array(
      'alter_text' => 0,
      'text' => '',
      'make_link' => 0,
      'path' => '',
      'link_class' => '',
      'alt' => '',
      'prefix' => '',
      'suffix' => '',
      'target' => '',
      'help' => '',
      'trim' => 0,
      'max_length' => '',
      'word_boundary' => 1,
      'ellipsis' => 1,
      'html' => 0,
      'strip_tags' => 0,
    ),
    'empty' => '',
    'hide_empty' => 0,
    'empty_zero' => 0,
    'link_to_node' => 1,
    'exclude' => 0,
    'id' => 'title',
    'table' => 'node',
    'field' => 'title',
    'relationship' => 'none',
  ),
));
$handler->override_option('sorts', array(
  'name' => array(
    'id' => 'name',
    'table' => 'term_data',
    'field' => 'name',
  ),
));
$handler->override_option('access', array(
  'type' => 'none',
));
$handler->override_option('cache', array(
  'type' => 'none',
));
$handler->override_option('style_options', array(
  'grouping' => 'name',
));
$handler = $view->new_display('page', 'Page', 'page_1');
$handler->override_option('path', 'rubrics_node');
$handler->override_option('menu', array(
  'type' => 'none',
  'title' => '',
  'description' => '',
  'weight' => 0,
  'name' => 'navigation',
));
$handler->override_option('tab_options', array(
  'type' => 'none',
  'title' => '',
  'description' => '',
  'weight' => 0,
  'name' => 'navigation',
));

no activity for 30 days