Keywords from Context in Mini Panels

i have a mini panel which takes a node as required context, named 'project'. within the panel i try to override a block title using '%project'. it doesn't work, which means that the keyword won't be replaced but outputted as is.

$mini = new stdClass;
$mini->disabled = FALSE; /* Edit this to true to make a default mini disabled initially */
$mini->api_version = 1;
$mini->name = 'project_sidebar';
$mini->category = '';
$mini->title = 'Project sidebar';
$mini->requiredcontexts = array(
  '0' => array(
    'name' => 'node',
    'id' => 1,
    'identifier' => 'Project',
    'keyword' => 'project',
  ),
);
$mini->contexts = FALSE;
$mini->relationships = array(
  '0' => array(
    'context' => 'requiredcontext_node_1',
    'name' => 'term_from_node',
    'id' => 1,
    'identifier' => 'Project categories',
    'keyword' => 'project_categories',
    'relationship_settings' => array(
      'vid' => '3',
    ),
  ),
);
$display = new panels_display;
$display->layout = 'onecol';
$display->layout_settings = array();
$display->panel_settings = array();
$display->cache = array();
$display->title = '';
$display->content = array();
$display->panels = array();
  $pane = new stdClass;
  $pane->pid = 'new-1';
  $pane->panel = 'middle';
  $pane->type = 'views';
  $pane->subtype = 'pages';
  $pane->shown = TRUE;
  $pane->access = array();
  $pane->configuration = array(
    'override_pager_settings' => 0,
    'use_pager' => 0,
    'nodes_per_page' => '10',
    'pager_id' => '',
    'offset' => '0',
    'more_link' => 0,
    'feed_icons' => 0,
    'panel_args' => 0,
    'link_to_view' => 1,
    'args' => '',
    'url' => 'node',
    'display' => 'block_3',
    'context' => array(
      '0' => 'requiredcontext_node_1.nid',
    ),
    'override_title' => 1,
    'override_title_text' => '%project',
  );
  $pane->cache = array();
  $pane->style = array();
  $pane->css = array();
  $pane->extras = array();
  $pane->position = 0;
  $display->content['new-1'] = $pane;
  $display->panels['middle'][0] = 'new-1';
  $pane = new stdClass;
  $pane->pid = 'new-2';
  $pane->panel = 'middle';
  $pane->type = 'views';
  $pane->subtype = 'projects';
  $pane->shown = TRUE;
  $pane->access = array();
  $pane->configuration = array(
    'override_pager_settings' => 0,
    'use_pager' => 1,
    'nodes_per_page' => '3',
    'pager_id' => '',
    'offset' => '0',
    'more_link' => 0,
    'feed_icons' => 0,
    'panel_args' => 0,
    'link_to_view' => 0,
    'args' => '',
    'url' => '',
    'display' => 'block_link_1',
    'context' => array(
      '0' => '',
      '1' => '',
    ),
    'override_title' => 0,
    'override_title_text' => '',
  );
  $pane->cache = array();
  $pane->style = array();
  $pane->css = array();
  $pane->extras = array();
  $pane->position = 1;
  $display->content['new-2'] = $pane;
  $display->panels['middle'][1] = 'new-2';
$display->hide_title = PANELS_TITLE_FIXED;
$display->title_pane = '0';
$mini->display = $display;