Cast On Crit Lightning Warp + Piety's Mercy bugged interaction

Context: I have a build that uses Titan Ember Fusillade with Piety's Mercy to trigger Cast on Crit Lightning warp.

Lightning warp will trigger correctly on adjacent targets within cull range that are not hit by the triggering spell (ember fusillade)

However, it will not trigger on targets that are within cull range if they ARE hit by the triggering spell - Cast on Crit will simply charge to full energy and reset without casting.

I believe this is probably caused by a quality of life portion of the programming that prevents Cast on Crit from targeting enemies that would otherwise die by the triggering spell/attack. However, in the context of Piety's Mercy, this creates a rather frustrating interaction that makes an otherwise very effective and interesting build much less enjoyable/functional.

Piety's Mercy is a cool support, and I'd love to see its potential unhindered by this bug.

Thanks for reading.