It is a pretty isolated, but very annoying bug. I suffer from it :-D
You need an AMD card (almost any) + vulkan running, xEnviro or similar AND an aircraft that uses some kind of OpenGL drawing(?) for drawing some displays (as far as i understood it). In these conditions displays and the sky flickers black often. So it depends on how you program the displays.
For the ini A300 and FJS 737-200 you can delete some plugins (TCAS, WXR or popup windows) to make it flyable.