Tested on physical hardware with 19.04. The issue is still present but the viaul manifestaton is slightly different. Rather than black flickers it's more of a shading effect that flickers on and off with mouse movement. It can also be caused by enabling the option to extent the magnified contents beyond the bounds of the desktop.
Tested on physical hardware with 19.04. The issue is still present but the viaul manifestaton is slightly different. Rather than black flickers it's more of a shading effect that flickers on and off with mouse movement. It can also be caused by enabling the option to extent the magnified contents beyond the bounds of the desktop.