Searching on a compound results in 3 documents

At the bottom of the HstQuery FIlter documentation at http://www.onehippo.org/library/concepts/search/2-hstquery-filter.html it is explained you can filter in a compound using a slash . Example: filter.addContains("address/example:street", query);

We're using this feature to filter on links. Example:
filter.addEqualTo("test:test/hippo:docbase", "553e81db-2de6-47db-9d46-3382662693a9");

The above code returns 3 times the documents expected. It appears it returns an instance for each stage of publication.

A workaround is to explicitly filter in the published documents, like this:
filter.addEqualTo("hippostd:state", "published");