"Glitched" pixels, El Capitan, formula box in numbers Today I installed El Capitan on my Macbook Pro and noticed some weird graphical effects when I was editing my numbers document:



I know that this is entirely software-related, otherwise the screen shot tool couldn't have captured it, and it turns on and off randomly, with mouse-overs and hovers.

Does anyone know a possible cause and fix of this?

My Macbook:


MacBook Pro (Retina, 15-inch, Mid 2015)
Graphics Intel Iris Pro 1536 MB
OSX El Capitan Version 10.11


My Display:


Built-in Display
15.4-inch (2880 x 1800)
Intel Iris Pro 1536 MB
Well, it doesn't happen to me anymore so if anyone else is having this problem I'd recommend:


restarting your computer (I did this)
Updating your OS (I am updating every time as soon as a new update comes out)