UI Bug on Logon Screen

Discussion in 'OS X Mountain Lion (10.8)' started by isrefel, Jul 28, 2012.

  1. macrumors member

    Jul 8, 2012
    Just posting here to see if anyone else has noticed this odd bug.

    If you log out of your account (not after a restart and first logging in), there is a flashing grey square on the lefthand side of the screen. Can anyone replicate this?


    I tried restarting and it still showed up. Its a large 300x300ish px square that flashes on the grey weave background.

    EDIT 2:

    Can no longer replicate this, not sure what happened? Questions still stand.
  2. HermiG, Aug 3, 2012
    Last edited: Sep 21, 2012

    macrumors newbie

    Nov 27, 2011
    I have also encountered this glitch. It can occur after a restart or a logout, though I don't think it always happens.

    I have a hackintosh so I assumed it was a graphics driver glitch (GTX 560 Ti).

    Update: This seems to be fixed in 10.8.2.

    To make this easier to search for:
    Mountain Lion login square
    10.8 login grey square
    os x login flashing square
  3. macrumors 603


    Jan 8, 2009
    Yup. Running 10.8 on a current gen Mac Pro 5,1 and this happens after restart, logout. Don't know why. Reported it to Apple engineers in my ADC account.

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