Have you tried this with unity 3.6.8? I can't reproduce your problem here with unity 3.6.8. I get the correct icon-image on the launcher for LibreOffice Write. See attached screenshot.
Have you tried this with unity 3.6.8? I can't reproduce your problem here with unity 3.6.8. I get the correct icon-image on the launcher for LibreOffice Write. See attached screenshot.