I have created a Quiz in Canvas with two questions that have the answer "0". One is a numerical answer question where students input "0" as the answer and the second is a fill in the blank question where students input "0".

When students go to submit the quiz, it says that they have 2 questions unanswered or without answers. I told them to submit anyways and it counts the 2 questions correct with "0" as the answer but it is inconvenient that the kids think their answer is not being saved as "0".

Why is Canvas doing this and can it be fixed? 0 should count as an answer.