Screen Sharing (double rectangle) icon in the menu bar appears for a split second and then disappears.
The Screen Sharing (double rectangle) icon on the menu bar appears for a split
second and then it disappears. This happens roughly every minute. I can not click on it to access options or to see if there is another computer connected. Screen Sharing is turned on by choice- I use it to access my screen from my home computer from time to time. I have not installed nor am I using any third party screen sharing app to share my screen, just the Screen Sharing preference that is in MacOS. The odd behavior stops when I turn off Screen Sharing. Could malware be causing this or is there another computer watching my screen? Should I be concerned or is this just a glitch?
iMac 21.5″, macOS 10.14