ODT export is empty on the View Users Rights

[oanat]

Steps to reproduce

1. Go to http://localhost:8080/xwiki/bin/view/AdminTools/ > Security > View Users Rights
2. Click on Export and choose ODT

Expected behavior
An ODT export with the content of the page

Actual behavior
The exported page is empty

xwiki_AdminTools_ViewUsersRights.odt

Environment (please complete the following information):

• OS: MacOS
• Browser Chrome
• XWiki version 16.4.6
• App version 1.2.1
• Office Server: /opt/libreoffice7.6

[snazare]

reproduced on cloud 16.10.8., page /xwiki/bin/view/AdminTools/ViewUsersRights

the page can be exported in PDF. The ODT export is empty.

ODT export works as expected on other pages of the app, such as /xwiki/bin/view/AdminTools/CheckUserRightsOnPage