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.
The current version of phpdocx doesn't include an option to change the default font sizes in charts. We send your request to the dev team to be added in a future version of the library.