(Mac) Language/Spell-check - missing options

Description of the issue:
Brave on Mac seems to lack language/spell-check options compared to Windows.

On Mac when I add more languages I cannot check option for Brave to apply it for its UI. Then in Spell-check section I have only ON/OFF toggle, however on Windows all languages from the list get their own toggle, so you can basically switch on/off spell-checking for all languages.

I am attaching screenshots:


On Mac the spell-checking is behaving funny too, it seems it is not working properly, when I add a language it is still spell-checking only English and when I move other language to the top it seems to turn off it as a whole and after restarting Brave (via cmd+Q) it seems to somehow work half way, some words in English and other language(s) seem to get marked as incorrect and some not (English and custom language included).

What’s more, on Win all the language spell-checking (adding languages and turning on/off spell-checking) seems to apply changes instantly, while as I mentioned on Mac it seems it is not applying them correctly.

Steps to Reproduce:
Add languages, turn on spell-checking, try typing,…

Actual Result (gifs and screenshots are welcome!):
Spell-checking not working or seemingly partially working (description above)

Expected result:
Spell-checking working for multiple languages simultaneously (like on Win)

Reproduces how often:

Operating System and Brave Version:
OS X 10.14.5 (Mojave, last stable version)
Brave 0.65.118

Shall I report this elsewhere? Any suggestions?