Challenges set to zero

Afternoon all
I started a new character (number four) i noticed that all the challenges had been set to zero, so when i went back into the other character’s that are on level 31, i noticed that there challenges had been set to zero also. Is this part of the new update or a bug? i am playing on PS4 Any help would be received gratefully

This Happened to me as while on my 2th character