When i finished 1 free run in new event I went to resetart the world and start a new free run. When i clicked to start a new run it didnt want to start it. it said something but i didnt read what.
So i resetarted the game. And it didnt start right away i was too lazy to wait, so i went to watch some youtube videos. 3 min later i go back into the game and i have bush wacker on lvl 1 he was on area lvl 7... I do a few clicks to kill monster and get some gold so i can lvl up my crusaders and go afk.

And it appears that i have unlocked all 760 lvl areas from the last run. so i got most of the crusaders to lvl 5000 by clicking auto upgrade lvl... And i click auto progress with G and they move to area 760....

So yea... that is the bug.