Small White Circle in Middle of Screen
Hi,
I have a 2016 Macbook 12". I noticed a coupe of months back that there is a small white circle, drawn/created by OS in the middle of the screen. I can't see what is causing it and try as I might, I can't get rid of it. I've upgraded MacOS several times with betas and it's still there.
When I change the resolution, the circle moves accordingly and gets slightly larger, so I know it's not a defect of the screen. I can't find what is casuing this in System Preferences, and any help will be gladly received.
Thanks, Craig
MacBook, Mac OS X (10.6.8)