Document filter does not filter on correct tags
In some cases, we've noticed that the document filter will not work for documents whose terms have been moved from one node to another in the term store.
The solution is to force SharePoint's term set sync to do a resync of the effected term. The method is to do an edit on the term (rename it, wait for approx. one hour and then rename it back again). If the error persists, contact a MetaShare partner or MetaShare support for assistance.
We have communicated this issue to Microsoft and hope they will release a fix for it soon.