I use a few languages, but I _don't_ need the Canadian multilingual.
Actually, I don't need either of these:

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If I go to settings -> language preferences, I only see the languages I need. No Canadian stuff.

If I go to Control Panel -> Language, I don't see anything either.

I know it's a bug. Now to properly remove the Canadian stuff, I need to use a lame hack: add it via the Control Panel -> Language, add all the languages and input methods I want to remove and then remove them.

This removes the extra languages.

I suspect the extra languages appear either when I relogin (restart explorer) or when I trigger a hotkey of some kind; however, I doubt the latter.

I think I have to go to registry and turn this behavior down. It's often the case with MS. But I don't know where to go. Looks like suggestions I found were applicable to earlier versions of W10.

If anyone could help me to get rid of this stuff, I would be very grateful.