Hello,
The dev team has generated a patch in the testing branch. Although it's currently being tested before including it in the stable branch, it can suit your needs without adding empty blank spaces as explained in our previous reply.
Please edit the HTMLWordML.php file and go to the repairWordML method. In this method, replace the following line:
$data = str_replace('</w:tcPr></w:tc>', '</w:tcPr><w:p /></w:tc>', $data);
with:
$data = str_replace('</w:tcPr></w:tc>', '</w:tcPr><w:p><w:pPr><w:spacing w:after="0" w:before="0" w:line="240" w:lineRule="auto"/></w:pPr></w:p></w:tc>', $data);
Regards.