Hello,
UPDATE: phpdocx latest versions handle all PHP Tidy versions automatically.
Please send to contact[at]phpdocx.com the username or e-mail of the user who purchased the license.
Also, please attach the simplest template and script that illustrates your issue. We need to run it, so the script shouldn't call external resources (such as databases or web services).
We have only seen those extra blank spaces when Tidy is missing or not enabled, so we need to check your template and script to find the source of your issue.
Regards.