Filter Has taxonomy terms (with depth) not working as expected

Hi,

I have configured a view with three page displays, each to list persons belonging to a particular office within an organisation. Some persons - those belonging to more than one office - are wrongly listed multiple times in the displays. Here is a (simplified) example:

I have a vocabulary "Organisation" with two levels, like:

Board (tid 1, weight 10)
- Chairman (tid 10, weight 0)
- Member (tid 5, weight 1)
Management (tid 2, weight 11)
- CEO (tid 15, weight 0)
- Manager (tid 20, weight 1)

Some nodes of content type "person" are related to terms under both parent terms, i.e. "Watson" (node 100) has terms "Chairman" (10) and "Manager" (20) attached.

In the display "Board" I have configured a filter Has taxonomy terms (with depth) and selected the parent term "Board" with a depth of 1. Node 100 gets listed twice in the display, although I would expect it to only appear once (as child of term "Board"):

Watson, Chairman
Watson, Manager

(I have also tried to use the filter criterion Has taxonomy term (without depth) with just the child terms selected, but I get the same result.)

Can someone help, please?

P.S.: I also need to sort the nodes by term weight, so that the "Chairman" is listed before the "Member", regardless of language. Is this possible? A patch for 7.x-3.x-dev seems to have been provided a while back - any update on this?

The Query (The term reference field in content type person is called "field_member"):

SELECT node.nid AS nid, field_data_field_member.delta AS field_data_field_member_delta, field_data_field_member.language AS field_data_field_member_language, field_data_field_member.bundle AS field_data_field_member_bundle, field_data_field_member.field_member_tid AS field_data_field_member_field_member_tid, node.title AS node_title, node.language AS node_language, 'node' AS field_data_field_member_node_entity_type, 'node' AS field_data_field_first_name_node_entity_type
FROM 
{node} node
LEFT JOIN {field_data_field_member} field_data_field_member ON node.nid = field_data_field_member.entity_id AND (field_data_field_member.entity_type = 'node' AND field_data_field_member.deleted = '0')
WHERE (( (node.status = '1') AND (node.type IN  ('person')) AND (node.language IN  ('de', 'und')) AND (node.nid IN  (SELECT tn.nid AS nid
FROM 
{taxonomy_index} tn
LEFT OUTER JOIN {taxonomy_term_hierarchy} th ON th.tid = tn.tid
LEFT OUTER JOIN {taxonomy_term_hierarchy} th1 ON th.parent = th1.tid
WHERE ( (tn.tid = '11') OR (th1.tid = '11') ))) ))
ORDER BY field_data_field_member_field_member_tid ASC, node_title ASC
LIMIT 100 OFFSET 0