LibreOffice icons missing from Unity task panel

After installing 12.04, I removed the LibreOffice icons from the left task panel to reduce clutter. However, now when I start LibreOffice from the home button, the icons do not reappear in the launcher as a running program. In addition, they don't appear in the ALT-TAB menu either. All other applications (chrome, terminal, etc) seem to work fine.

Is there some way to restore the icons?

Solution 1:

You can simply drag them from the dash onto the launcher. I have had this same issue with other programs (namely Gimp) where the program does not appear on the launcher or in alt-tab. It is a known bug (https://bugs.launchpad.net/ubuntu/+source/bamf/+bug/995916). The only way to get back to them is to either use SUPER+W (the super key is the Windows key, if you didn't know) or keep the shortcut on your launcher. According to the bug, it should have been fixed, so try updating too.