I'm experiencing this weird bug on OS X El capitan.

There is a white bar over most of my menu items in the top right of my screen. The items are still there and are interactable.

Anyone got any ideas? A quick google search didn't seem to give me any ideas for it.

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  • I'm having this exact problem on Sierra with a 2016 MBP. It only occurs when the external screen has no windows on it, so opening and closing a Finder window fixes it. It's bizarre though that it's been around for so long and I'd love to know what's causing is.
    – jan
    Commented Nov 9, 2017 at 3:25

2 Answers 2


For me this happened on one of the monitors that I was extending my macbook pro's desktop to, not all of them though.

Easiest fix, expand a program to full screen and then minimize it again, somehow the animation of expanding fixes it.

  • This workaround works. Although I wonder what the cause is, and how to prevent it. Do you guys also use the Bartender app, by any chance? (it hides some icons from the Tray bar)
    – superiggy
    Commented Jul 13, 2017 at 16:08

In SystemPreferences->Display set the Brightness lower.

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