The new release version 2019-07-27 of the OpenOffice plugin is out.
It fixes issues about broken CSS import. This issues for example occurred if the Wrap or Edittable plugin was installed to. Users who experiences missing colors or images after export to the ODT format should update.
Also see the release notes at
https://github.com/LarsGit223/dokuwiki-plugin-odt/releases/tag/2019-07-27.