Tapping Fn/Globe should normally switch input sources right away with no additional click needed, so it can be extremely easy to get the wrong layout if you have more than one item on the input sources list.
It’s not uncommon in the ASC forums to find people who have extra input sources mysteriously added to their settings, often after an update. But in my experience it’s usually Spanish, which only causes problems with punctuation keys on the right edge of the keyboard.