[CLIENT] On rare occasion, entering champion select would make the client blackout.

What the title says. Sometimes when I enter a normal game (idk for ranked) rarely, I would get a small glimpse into the champ select screen, but then it would sometimes go fully black, leaving me unable to choose a champion. I don't know if it goes back to normal after the timer goes down to zero as I just exit the client. After that, the next normal game i get into, the screen is perfectly fine.