White box on bottom of my screen
Hello,
I have exactly the same issue than Carlpeng (Posted on Sep 6, 2018 8:31 PM).
A white box with a grey left side appeared at the bottom of my MacBook Air (1.7 GHz Intel Core i7 - Mojave 10.14.2 (18C54)).
It appears only when clicking on the desktop and disappears if switching to an app. It is resizable but I cannot close it. When ovre it, the pointer switches to text mode but I cannot type anything. I can paste text though with right click -> paste.
I can select the text and erase it.
Even I found it annoying, I have not tried to remove it until yesterday when it appeared on my iMac (3.2 GHz Intel Core i% - Mojave 10.14.6 (18G103)) as well!
As my 4 years old son is sometimes playing with my computers, I suspect an unusual keys combination.
Any help would be welcome and much appreciated!
MacBook Air 13″, macOS 10.14