Here are the steps how to reproduce the problem:
1. Create a new quiz
2. Add a new page.
3. Create a new question:
3.a. question type: multiple choice
3.b. question text (984 chars):
“Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia, deserunt mollit.”
3.c. add 14 Responses (a.Response A, b.Response B,…., n.Response N)
3.d. mark one response as correct and assign it 1 point.
4. Press Save Question
5. Duplicate the question 124 times to have 125 questions.
6. Run the test. Respond to a single question (in order to quickly reproduce the problem) and press Submit.
7. The results are calculated and correctly shown after the test.
8. In admin, go to that quiz and try to see the results. The counter indicate there is a result entry, but when you want to see it there is nothing saved. The results are also missing from database. The option for quiz is to save the response in database (by default)