Please note this is an old forum thread. Information in this post may be out-to-date and/or erroneous.
Every phpdocx version includes new features and improvements. Previously unsupported features may have been added to newer releases, or past issues may have been corrected.
Before the patch I already tried your solution but it didn't work, that's why I follow your forum thread and apply the patch.
Although, the patch work for now, I think that the Addtemplate() method could be modified in order to be used in a current document. It would be easier, faster and cleaner :)
So, next version of phpdocx could change the Addtemplate() method ?