no partial points when some items not answered

[a-kempka]

Thank you for your indispensible plugin! Plugin-Version: 3.7 for Moodle 3.9-4.1 (Build: 2023010300) 2023010300 Moodle-Version: Moodle 3.11.16 (Build: 20230814)

After grading a quiz I noticed that the grading behaves not as expected. No partial points are awarded if at leas one item has not been answered.

To reproduce the issue:

1. Create a quiz with a specified end time.
2. Create a kprime-Question with 4 items
3. Choose "subpoints" as the scoring method
4. Set default mark to 4
5. (optionally) use "shuffle answer statements"
6. Have a student take the quiz, but only answer n-1 items correctly and omit 1 item
7. Wait until the time for the quiz is over OR submit the answer on time
8. Review the attempt of the quiz as a teacher
9. (optional) re-grade the quiz

Expected result: The student is awarded n-1 (here: 3) points. Actual result:

• the students' question is labelled as "Not answered"
• the grade is "Marked out of 4.00" (not "3.00 out of 4.00")
• the feedback shows the correct checkmarks (for the correct answers) or across (for the omitted answer)
• the resonse history (from the teacher's role) shows
  1. "state not yet answered" with the datetime when the answer was submitted by the student
  2. Re-grading the quiz automatically does not fix the missing points for the question.