For Ubuntu: If you want to report bugs:
- in a release from the 3.4.X or older series, please report to Launchpad first as LibreOffice is still heavily patched there.
- for releases from 3.5.0 onwards you can mostly assume that any bug in the Ubuntu-version is also in the upstream version. So there is nothing stoping you from reporting the bug to LibreOffice right away. Reporting the bug to Launchpad too still makes sense to raise visiblity (and reporting to Launchpad is easy anyway for an Ubuntu user). When reporting LibreOffice bugs upstream make sure you have the full LibreOffice suite installed with
sudo apt-get install libreoffice– note that the default install does not ship with a full LibreOffice installation.