In the Daily Challenge menu there are the daily challenges. There you see the things you need to do to complete it. And some days there is "Kill 3 players in Solo Eggwars : 0/3". Then you complete that and check your Daily Challenge again and there stays : "Kill 3 players in Solo Eggwars : 0/3" So you think huh, but I killed 3 players in Solo Eggwars. And I think it's a bug. I can make a video if you want.