Operations in secondary menu do not work with VBO

I was defining & organizing my custom operations in main & sub categories.
So, in hook_entity_operation_info_alter operations are reported like

'foo/main' => array(
      'handler' => 'EntityOperationsOperationFooMain',
      'provision' => array(
        'menu' => array('default secondary' => TRUE, ),
        'views field' => TRUE,
      ),
    ), 
'foo/bar' => array(
      'handler' => 'EntityOperationsOperationFooBar',
      'provision' => array(
        'menu' => TRUE,
        'views field' => TRUE,
      ),
    ),

The handler EntityOperationsOperationFooBar is extending EntityOperationsOperationAction class to inherit vbo feature.

Unfortunately, when I build a VBO view & try to enable this operation, I'm facing an JS error due to an input DOM ID composed with a slash '/' in the label.

Finally, I was able to fix the issue modifying the operation id sent by entity_operation to vbo module in file plugins/operation_types/entity_operation.inc, function entity_operations_vbo_entity_operations_list :
Replace line 47
$new_operation_id = implode('::', array('entity_operation', $entity_type, $key));
by
$new_operation_id = implode('::', array('entity_operation', $entity_type, str_replace( '/' , '-' , $key)));
to replace secondary menu slash by another character ('-' in my case)

Hope this will help.