When an item in a design file (drawing) is selected, the appearance of it and/or other elements becomes degraded or invisible. The display has also been described as appearing coarse or grainy. This behavior has been encountered by users with onboard graphics processors instead of separate graphics cards designed for CAD workstations.
Alternatively, disable hardware acceleration on the system.
keywords: display, view, disappear, object, text, graphics processor, onboard, Intel, hover, fade, hidden, black, blank