Mistakes are not underlined

When I have a sentence wrong or have typos, the correct version is often displayed without the mistakes being underlined. That makes it hard to see where the mistake is, especially when learning a language with different letters (it's hard for me to find a typo in a Hebrew sentence). Why is that? Could you please fix it? (I don't know if other language courses have this problem as well)

March 1, 2019


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