Mail notifications clearing when phone unlocked.

[Morac]

I started having a problem today where any time I unlock my iPhone 7 Plus running iOS 10.2.1, all notifications from the Mail app are cleared. If my phone was locked when I get a notification I never see it. If it was not locked, then the notification will stay in the Notification Center until I lock and unlock my iPhone.

I have 3 email accounts, all set to display in Notification Center and it happens with all three. The only thing I changed recently was to enable fetch since Yahoo Mail no longer supports push, but I did that days ago. Also I did it on my iPad and that still behaves normally.

I've tried restarting, turning off Mail for iCloud and Exchange and deleting the Yahoo account, but nothing works. I can't view notifications while the phone is locked, do to a MDM restriction so I can't tell when the mail notifications disappear, but I believe it's on unlocking as if I turn of showing mail notifications in the lock screen, those too vanish once I touch home to unlock and then swipe down to show the Notification Center.

I have no idea why this started happening, though I did find some other people with the same exact problem, so it seems like it's a bug in iOS 10.2.1.

https://discussions.apple.com/thread/7786817?start=0&tstart=0

Any ideas on how to fix this?

 

[Morac]

So I disabled the MDM profile and found that it clears the moment I unlock the phone. Any mail notifications that are in the Notification Center remain there when I lock the phone and view the Notification Center, but are cleared on unlocking.

I tried resetting settings and deleting all email accounts, but that made no difference.

Erasing the phone and setting up as new did fix it, but I don't want to do that so I'm restoring from a backup now. Hopefully the bug is not triggered by something that gets backed up.

 

[Morac]

It still appears to be working after the erase and restore from backup. Unfortunately fetch doesn't seem to be working. It should be every 15 minutes, I waited 30 minutes and nothing happened.

 

[uandme72]

I have reported the sysdiagnose logs to Apple.
Have you done so?

 

[Morac]

It happened again a few weeks ago. That time restoring from a backup didn't fix it. It had to restore from an older iCloud backup. Though right before it started working I did set it up as new and then tested, so maybe that needs to be done prior to doing a restore from backup.

I've filed a bug report, but haven't heard back from Apple. I'm assuming this won't be fixed in iOS 10. Hopefully it will be fixed in iOS 11.

 

[uandme72]

Please check on 10.3.2 Beta 4 whether the issue is resolved?

 

[glxxyz]

There’s a fix in this thread, disable “Show in history”: https://forums.macrumors.com/threads/mail-notifications-disappearing-when-face-id-unlocks.2084211/