I have the interface in french, but some texts remains in english, like :
1) by pausing the game, it's written "are you sure you want to quit?" (despite the buttons have french labels)
2) on the new minigame, it's still written "per click", "per second", and each upgrade has titles in english (like "banana slicer", "mustache wax" and such

And while I was discovering the minigame, I still the game isn't fully friendly with my (xbox) controller, as I can still click on the cookie despite I don't press the E key