Multilingual spell checking on Whatsapp Desktop is not working Multilingual spell checking (French and English) is working very well generally on my mac OS install. I set it up correctly following these recommendations.

However, there seems to be something particular with the Whatsapp Desktop application that makes it not work. Only English spell checking is happening and any word in French (not colluding with an English word of course) is underlined in red.

Is someone having the same issue? Does anyone have a solution to this?
I had the same issue with Spanish and English. I followed these instructions to change the language priority, putting Spanish over English, and the issue was resolved.

http://osxdaily.com/2011/08/21/set-language-priority-mac-os-x-lion-auto-correct/