Can't share weapon with set 2

Hello, looking for some help here. I just got a new 2H mace and I am not given the option to share to weapon set 2 with it. But I could with my old one. There shouldn't be any stat requirements preventing me from doing so. The "Demon Burst" is the one that does not let me put in both weapon set 1 and 2.









I have tried with MKB and Controller.