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Mail preview text flickering in MacOS Sierra

Whenever I access a Mac Mail mailbox, the preview text of all the messages flickers initially, then stops. This is a new issue since upgrading to Sierra. I haven't seen this reported by anyone else, so I'm hoping it's something that can be resolved. Is anyone else seeing this, and is there a known solution?

iMac, macOS Sierra (10.12), 27" Screen

Posted on Sep 24, 2016 3:18 PM

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Posted on Sep 25, 2016 5:41 PM

There have been reports with flickering reported during the beta. You need to report it to Apple Feedback so it can be logged and put in the queue to be fixed. Be sure to give specific info on your Mac. They will need info you'll find about your Mac in “About this Mac”.


http://www.apple.com/feedback/macosx.html

68 replies

Oct 5, 2016 10:50 AM in response to IHaddow

System Preferences > Accessibility > Display

Check

  • Reduce motion
  • Increase contrast

Does this help?


Restart in Safe Boot mode and test Mail. Do the problems go away while booting in Safe Boot mode?


Safe boot

* shutdown

* start the Mac and *wait* for the startup chime to sound

* after the sound, press and hold down the shift key

* keep holding and *wait* until the grey  Apple logo appears

* now release the shift key and just wait (it could take a few minutes)

* eventually the login screen appears with the words SAFE BOOT in the top right of the window

* continue to login to see if the problem goes away.


If the problems went away while in Safe Boot, download and run Etrecheck. Copy and paste the results into your reply. Etrecheck is a diagnostic tool that was developed by one of the most respected users here (and recommended by Apple Support personnel) in the ASC to provide a snapshot of the system and help identify the more obvious culprits that can adversely affect a Mac's performance.


http://www.etresoft.com/etrecheck

Mail preview text flickering in MacOS Sierra

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