Cast on critical bug

I've been using Cast on critical with Lightning Warp. Suddenly it can't be activated and i already match the requirement. I tried to create another Cast on critical gem and it work. only the 1st gem of coc is not work.

Same issue. Gem is completely bricked. A clue to what's going on is whenever the gem is removed, it is unchecked on both weapon sets by default.

This is my second or third cast on critical gem to get bricked. Thankfully they have only been level 19 but level 20 is 4 div! I can't upgrade my character for fear that I will lose 4 div every time my gem gets bricked!

Same bug today.It's already October 9, 2025, and this bug still hasn't been fixed.I change a new gem, and get bricked after 2 maps only.

i have fixed the bug. Its cause of spirit reservation efficiency. to fix you need a dialla desire on hand.

while active take out dialla, then put back another cast on crit then put desire inside.then take it out to brick it. then put back the original coc it will work.