It's very odd how the special character buttons appear in some parts of the lessons and not others. It's downright frustrating to have no special character buttons and then have the feedback to watch out for the diacritical marks or even have the word marked wrong for the lack of one. The Tiny Cards are almost useless because they don't use the marks at all.

If the buttons can be programmed for some parts of the lesson, why can't they always appear when I am expected to input a word in Czech?