Please see attached images to see the use case.
It is not an issue because:
- The answer key is 0,00001.
- The answer key has been set with 3 decimal places so the answer key is cut from "0,00001" to "0,000".
- The student's answer is 0,00001. This answer doesn't match with "0,000". This is the reason why the student's answer is wrong and the displayed answer key is 0.