Unlocked Quiz showing locked on student side

I have had the whole class take the test but there is one student who has it showing up locked on her end. She’s closed her browser etc. No help. I viewed her as a student and it looks locked. When I view her as a teacher, it shows unlocked.

This article shows how to lock and unlock materials. It also includes some troubleshooting. If the problem persists, I would advise reporting a problem.