Flashing from daytime to night time

Was just in a public game on PC and it started to flash, rapidly, from daylight to night time in a strobe effect. Was extremely annoying. Exited the game and went back to my game but the player’s side mission was stuck on my map. (all my missions are done).

Edit: update: restarted my game after a complete exit and the side mission was gone. These kinds of bugs really take any enjoyment out of this game.