Hi Hector,
Thanks for contacting Syncfusion support.
We can reproduce a similar kind of image positioning issue, while importing the document which contains a floating image in the header part. But to confirm that you are facing the same issue (same scenario). Please share with us the issue reproducing document. Because it will help us to provide you the appropriate solution at the earliest.
Please let us know if you have any other questions.
Regards,
Kalaivannan