In MS WORD I type in a document and the Automatic Speller is underlining words that are spelled right in English - my default language. When I click abc - spell check - Spelling and Grammar shows up and says: French (France).
My default language is set to English, Tools--> Options--> Spelling and Grammar is set to English too.
All Office updates are recent, even run the Detect and Repair option.
And yes, I did not copy and paste text from another document, just typing my own words.