Dice of Derangement Didn't Activate

Fractured memory activated once in hand, had full hand, killed mob and the stress decrease amount didn't activate from dice of derangement. Hp was 2k out of 3k, conditions should've all been satisfied. This only happened once during the Chaos run, and my guess is it has something to do with curse card fractured memory. Pretty sure something about fractured memory activating in hand at least once caused this bug, have ended combat with fractured memory in hand (but did not multiply yet) and I didn't notice the bug.