Comment # 1 on bug 1158074 from Tom���� Chv��tal

Honestly I have no idea.
I looked in the git code and 'English Sentence Checking' is not available
anywhere in the sourcecode of libreoffice. If I am not mistaken the additional
option is based on language tool extension that is just bundled with the
upstream release:
  https://extensions.libreoffice.org/extensions/languagetool

The spellchecking the openSUSE does is just based on the hunspell which detects
most of the stuff out of the box on its own.