Steps to reproduce:
- Have LibreOffice 25.2.1 installed locally
- Configure Office Server from xwiki.properties
- Make sure Server state is Connected in Administration
- Select the attached Office document [^011-[FREE]-Clipart-4Pages-DOCX.docx]
- Click on Import
- Access the page
Expected results: The images and shapes appear as per the imported document. Actual results: One of the shapes and a "wmf" image appear with black background instead of transparent.  NOTE: On XWiki 15.10.12 the images are showing as per the imported document, with transparent background.  The issue is reproducing starting with 15.10.13 and on newer versions including 16.10.5 |