For some odd reason which I could not figure out, whenever I started up SpaceEngine, it never loaded the main menu and just left it with a blank screen. This just started randomly happening. When I first got it, this never happened.
The planet "KOI-3891.01" is apparently 2 AU in diameter in SE 0.980, and due to that diameter, makes its parent star be inside the planet, and for some reason, the planet's textures flash/glitch.