user has all languages available, so French would be used as the common language with the community
user only has a few languages selected, including French, so same as above
user doesn’t have French in their languages, in that case they usually ask in the support community (which allows every language) and see that it’s a common issue
Now I’m wondering, does that cause an issue when posting or commenting with a third-party apps, which might not have the ability to assign a language?
There are basically three options