Fix error Orange dashes show and blink just above the Taskbar

I have brand new computer and i am using Windows 10. see the orange dash just at the top right corner of the taskbar

How to Fix Error Orange dashes shows & blink just above the Taskbar

Sometimes dash come at the top of taskbar and blinks for a second then turn off for a second, and so on.

This thing  occurs when system has been left idle for a long time 30 minutes or an hour. And when i started to do anything, little orange dot will be blink quickly for a few second and then disappear.

I have only seen it on a particular virtual machine, running VMware Workstation v14 over Windows 10 *64 with latest update Creators.

I have turned off all sleep options of this Virtual Machine. It is running in fullscreen mode. After not touching it for a long time when i come back to it, i see orange dashes but when i click they blink and disappear. How to fix it