"After quiz closed" review option defaults not set if due date not initially enabled

Issue: 
Creating/saving a new quiz without a due date, then enabling a due date prevents Moodle quiz review defaults from being applied.
 
Steps to reproduce:

1. Make a new quiz
2. Fill in only the name (don't enter a quiz closing date)
3. Notice the checkboxes for Review options "after quiz is closed" are all checked and grayed out (screenshot to be attached)
4. Save quiz
5. Edit settings of quiz
6. Add a quiz closing date
7. Open the Review options
8. Notice none of the checkboxes for Review options after the quiz is closed are checked (screenshot to be attached)
9. This is not to say the teacher cannot select these "After a quiz is closed" checkboxes, however, they would have to know to do so. 
10. So the real issue here is the "Review options" default settings here are not being applied by Moodle:
    1. Dashboard | Site administration | Plugins | Activity modules | Quiz

 
What we can do until this bug is fixed: 

• encourage people to select a quiz close date right away when making a new quiz, before saving