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.
I'm aware of that limitation. I am trying to do something else.
In my case, my clients are the ones making the templates, I am effectively making a template for their templates; a word document with the available images already embedded with the alt text, so that they can copy/paste right into their own templates without having to manually edit alt text themselves, which is not particularly user friendly.