Hello,
Maybe you need to set fixed sizes instead of automatic sizes? MS Word can handle automic table sizes in most cases, but some specific cases need using fixed sizes. We have done some tests and everything is working as expected.
If you send to contact[at]phpdocx.com the simplest script that illustrates your issue we'll check it. Please send a DOCX template sample and a script that uses phpdocx standalone (without external resources such as databases, web services, frameworks or CMS).
Regards.