adGroupCriteriaService() Problem retrieving Keywords / no unique elements in Response Array

[scrat]

When i use adGroupCriteriaService() i get a list of Keywords where each 
Keywords has 3 copys.

Here's the Code:
              $selector = new Selector();
              $selector->fields = 
array('Id','AdGroupId','DestinationUrl','Status','MaxCpc','Text','MatchType');
              $selector->predicates[] = new Predicate('AdGroupId', 
'EQUALS', (float)$paramsAG['adwords_adgroupid']);
              $selector->predicates[] = new Predicate('CriteriaType', 'IN', 
array('KEYWORD'));

              $page = $this->adGroupCriteriaService->get($selector);

So normaly the $page->entries retrieves an Arra with unique entries 
[1,2,3,...]

But when i run the code the Array looks like this [1,1,1,2,2,2,3,3,3,...]

I'm using API v201109.

A Workaround to avoid this unwanted behavior is to make the array unique:
                $allKeywords = array();
                foreach($page->entries AS $k) {
                    $allKeywords[$k->criterion->id] = $k;
                }

Any suggestions?

Best Regards

-- 
=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~
Also find us on our blog and discussion group:
http://adwordsapi.blogspot.com
http://groups.google.com/group/adwords-api
=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~

You received this message because you are subscribed to the Google
Groups "AdWords API Forum" group.
To post to this group, send email to adwords-api@googlegroups.com
To unsubscribe from this group, send email to
adwords-api+unsubscr...@googlegroups.com
For more options, visit this group at
http://groups.google.com/group/adwords-api?hl=en