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 not sure, but it sounds like your table is using Autofit to Contents. That automatically resizes the columns to best fit the contents. Instead, uou want a Fixed column width. One way to do that is specify Preferred Width for Table and Column in table Properties.