This add-on breaks the spell check. I had to remove and install "British English Dictionary (Marco Pinto)" to get Firefox spell check working again.

ras

So bad, I can't install the english package, on "firefox nightly" : 72.0a1 ( 2019-11-28) (64 bits) Windows


Ce module est incompatible avec votre version de Firefox.
// This module is incompatible with your firefox of Firefox

The spell check seklects all emails as FRench. How do I make English UK ny default language in my gmail?

Расширение не работает, в отличие от установленного по умолчанию русского.

does not work