Table view of decimal data does not show final row

I have created a simple node type that is just a title and a decimal. I have also entered several example nodes.
I have created a view that presents the data as a table:

  $view = new stdClass();
  $view->name = 'trans_summary';
  $view->description = 'A summary of transactions';
  $view->access = array (
);
  $view->view_args_php = '';
  $view->page = TRUE;
  $view->page_title = 'A summary of transactions';
  $view->page_header = '';
  $view->page_header_format = '1';
  $view->page_footer = '';
  $view->page_footer_format = '1';
  $view->page_empty = '';
  $view->page_empty_format = '1';
  $view->page_type = 'table';
  $view->url = 'view/transactions';
  $view->use_pager = TRUE;
  $view->nodes_per_page = '10';
  $view->sort = array (
  );
  $view->argument = array (
  );
  $view->field = array (
    array (
      'tablename' => 'node',
      'field' => 'title',
      'label' => 'Title',
      'handler' => 'views_handler_field_nodelink',
    ),
    array (
      'tablename' => 'node_data_field_amount',
      'field' => 'field_amount_value',
      'label' => 'Amount',
      'sortable' => '1',
    ),
  );
  $view->filter = array (
  );
  $view->exposed_filter = array (
  );
  $view->requires = array(node, node_data_field_amount);
  $views[$view->name] = $view;

This creates the following html:

<tbody>
 <tr class="odd"><td class="view-field" id="view-field-node_title"><a href="/node/4">Test 4</a></td><td class="view-total-number active" id="view-field-node_data_field_amount_field_amount_value">223.01</td> </tr>
 <tr class="even"><td class="view-field" id="view-field-node_title"><a href="/node/1">Test 1</a></td><td class="view-total-number active" id="view-field-node_data_field_amount_field_amount_value">1000</td> </tr>
 <tr class="odd"><td class="view-field" id="view-field-node_title"><a href="/node/3">Test 3</a></td><td class="view-total-number active" id="view-field-node_data_field_amount_field_amount_value">12333</td> </tr>
 <tr class="even"><td class="view-footer" id="view-field-node_title-3">Test 2</td><td class="view-footer active" id="view-field-node_data_field_amount_field_amount_value-3">&nbsp;</td> </tr>
</tbody>

The value in the "amount" column and last row is just given as  . If I make the column sortable by amount, it is the same - the final field is always empty. See attachment for screenshot.