Affects Version/s: 1.9.3
Fix Version/s: None
Quiz module shows a Janaury 1970 Quiz close date when editing a course as Site Admin and then switching role to Teacher.
To reproduce the bug:
0. login to Moodle as Admin
1. create a quiz in any course, leaving disabled open and close date
2. go to the course home page and switch role to Teacher
3. access the quiz
4. the quiz page shows "Quiz closed Thursday, January, 1, 1970"
Moodle version 1.9.3+ Build: 20090121