rMBP OS X 10.8 Mountain Lion

While chatting with friends on facebook, the text randomly disappears and appears at random intervals. I cannot induce the effect manually. It is very frustrating to see the text suddenly disappear yet show when I press enter.

Is there a specific reason ? Maybe spelling autocheck or autocorrect ?


Any updates on this ?? Is there a fix ?

2 Answers 2


I'm experiencing the same thing — there appears to be a rendering bug in Safari. Sometimes I see visual glitches when scrolling, too. It will probably be fixed in a software update in the future.

  • Note: be careful if you try to use Chrome as an alternative — there's some video rendering bug which freezes my entire system!
    – jtbandes
    Jul 28, 2012 at 23:52
  • Hmm I thought I was the only one with a problem, thanks for the reply !
    – Render
    Jul 29, 2012 at 9:59
  • I also have delays before parts of pages are rendered when scrolling. But it could have something to do with defaults write -g NSScrollAnimationEnabled -bool false.
    – Lri
    Sep 24, 2012 at 9:20

Also experiencing the same thing. I wonder if it has something to do with the autocorrect. It is highly annoying though. It only happens in textareas that I've noticed. Never seems to happen in single line form elements.

  • Comes and goes for me...Not sure why or when it happens
    – Render
    Aug 16, 2012 at 15:21

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