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#116 iPadOS 14.4 not locking the screen
Hello! We have some troubles with SEB on iPad OS 14.4, it is not blocking the screen properly, it is allowing the students to change screens and sometimes blocking it on other apps. We tried everything on the config files and where unable to find a configuration that was adecuate.
We thank you for the help
Unfortunately there is a bug in iOS 14 (it's a regression of a bug which already existed in iOS 9) which allows to tap the back link on the top left of the display in the iOS Status Bar to return the the app, from which SEB was started (often that would be Safari). The AAC single app mode stays active, so students are then locked in that app and the device needs to be force restarted.
Hopefully Apple fixes this soon in an iOS update. There is a workaround though: You have do deactivate the iOS Status Bar in your exam settings:
mobileStatusBarAppearance = 0 (mobileStatusBarAppearanceNone)
mobileStatusBarAppearanceExtended = 0 (mobileStatusBarAppearanceExtendedInferred) or 3/4 (mobileStatusBarAppearanceExtendedNoneDark/mobileStatusBarAppearanceExtendedNoneLight)
Manually you can set that in Settings / User Interface / Status Bar Appearance Option “None” and Status Bar (w/Face ID) “Inferred” or “None - Black”/“None - White”.
The disadvantage is, that without the status bar, there is no indication about battery charging level.
I'll also work on a SEB for iOS update next week to hardcode that workaround into it for iOS 14.x.