Short info: After Habared has kindly told me on GitHub that my “WordPress2Doc” tool has a few problems with UTF-8 characters, I took time and wrote a small fix.
In fact, I had missed the character encoding in the HTML code that is embedded in both, the generated .docx- and .pdf-documents.
The latest, UTF-8 compatible version of WordPress2Doc can be found both in the main article and on GitHub. I would appreciate any feedback!