View Full Version : Odd black box on screen

Meta Downhour
04-18-2017, 01:46 AM
26338 There's a black, translucent box with square corners that has smaller, white boxes with square corners on each corner. It doesn't change size when I alter the size of the dock. What is this thing???

04-18-2017, 07:40 AM
What Mac model, year, and OS does this happen on? Can you post a screen shot?