Hi Spire.Doc Team,
We created an app (C# .NET Core 2.2) using Free Trial Spire Doc from NUGET catalog, to convert DOCX to PDF.
The document has a simple header, an image with a text, and all was generated as you can expect.
We also test it at spire doc web conversion you have in live demo.
The problem was when we adquired the license of XLS and DOC, and Installed Spire.Office to registed both licenses (we also test it only with latest version of Spire.Doc)
Image position is not respected from the test aligment.
Example as Attachment.
Version used
<PackageReference Include="Spire.Office" Version="7.10.0" />
Best Regards.
David.