Spell check detects no wrong spelling in English (Canada)

And when I try to diagnose, the spell check dialog box disappears as soon as I close the “spellcheck is complete” pop-up.

What are your language related settings in Tools > Options > LibreOffice >Languages?

Screenshots would be helpful.

You might be missing the spell checker backend named aspell. Assuming that your OS is Linux, or similar.

  1. You don’t actually need aspell, you can install an extension.
  2. I guess, the asker has figured out something since 2015 :slight_smile: