Comment # 15 on bug 915996 from Paul McAuley

LibreOffice offline help does not appear for me in the latest Leap 42.2
release. If I try and install the rpm from libreoffice.org I get unmet
dependencies.

The "fix" here doesn't work either:
https://forums.opensuse.org/showthread.php/507060-LibreOffice-4-4-2-2-Missing-help-files