Spell checking
For spell checking, please make sure hunspell is properly installed; this should be the case for both still and fresh LibreOffice versions. Then install a language dictionary for hunspell like hunspell-en_us for American English or hunspell-de for German (check the AUR if your language is not in the official repositories). Then enable the Writing aids by selecting the check-box in Tools > Options > Language Settings > Writing Aids > Hunspell SpellChecker after restarting LibreOffice.
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