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.
That's not an error. By default phpdocx inserts that values and you can open the document without errors. If you open the document and then save it, that values will be updated.