I am currently administering an exam using Canvas' Quizzes functionality (not New Quizzes), and the quiz has a time limit of 75 minutes. Although this time limit seems to be working for almost all students, one student emailed to let us know that she lost track of time and was able to continue the quiz past the 75-minute limit. When she submitted, she received a notification that her answers may not have been recorded because she was submitting late.

I checked the log for her submission, and she did in fact work on the quiz for longer than the 75-minute limit. How can this be? Is there anything else I should do to ensure that quizzes auto-submit at the time limit for all students?