Watermark image is moved

[cosmiccosmo]

Hi everyone,

I understood that for now only inline images are usable in python-docx. As I need a bgrd image for an automated document creation I tried to work around by opening an docx that already has a bgrd images implemented as watermark.
The problem: the watermark image does not stay in place and is always moved, regardless of my settings in word for the placement. I tried every single setting here. Can somebody of you please explain what is python-docx is doing here under the hood and if I can stop it in any way moving the watermark image. ...or explain another way to include a fixed bgrd image.

Thank you everyone! :)