Quiz with Ranking question type result unexpected

Dear community,

I created a quiz with the ranking question type. A simple ranking (the default) with three options, Option 1, Option 2 and Option 3. The idea as I understood, to bring these Options in the correct order.

For a test scenario I answered two times with the wrong order, so Option 1 and Option 2 are mixed and wrong, the detail view shows exactly what I expect. One and two are wrong and three is right.

My expectation in the score view would be in this case, that 100% of Option 3 are correct but the result is presented as follows.

Is my expectation wrong or is there something wrong?

Thanks in advance.