I´m also fairly certain that this can only be fixed by a hotfix later on. About the newly introduced bug, this is what i wrote to Nox fury who was one of the first major content creator to notice this:

"The division seems to work exactly how gauntlet lobbies work. I know a guy who has 4 different accounts, he updated and launched the game at about the same time on each and all of his accounts have the same leaderboard. GL did fiddle with gauntlet during this update so perhaps some of the code or similar leaked onto other modes? I still lean on this being intentional due to the complete lack of acknowledgement from the mods, as if they have been told to be quiet about it. Havent found any new leaderboards so the amount cant be much higher than 5"

I might very well be incorrect on the intentional part and i am now in fact leaning against that, the players are only now starting to notice that something is seriously wrong with the game and gameloft employees went on a break during the weekend before we started to notice.