A new word (blue) remained even after I ticked off the lesson

I worked on the mini stories in Turkish. At number 5 I noticed something strange. I read the whole text and found every blue word but the count shown in the overview still shows 1.
I even tried the tick at the end, but nothing changed. What strange word is there that cannot be seen?

This is because we changed the titles slightly in our Mini Stories - There was a word in the title that is no longer present in the text but is still counted in the number of New Words. We are working on a solution to this issue. For now, rest assured that you have full completed that lesson.