The ignition animation and most notably the sound is missing.
I'm using Caliban's hand and it's when an enemy has gotten killed by my knife.
The damage of the Ignition still seems to take place but with a considerable delay, ca 1s.
It does still play the buildup sound ahead of the ignition.
So it just leaves me feeling unfulfilled and desperate for the release of the sound.
It's like the buildup to a good base drop and then nothing, it leaves me with a uncomfortable pressure.
Having so many is the reason I really like Caliban's hand, it may also contribute to the problem.