Culling Strike on Heavy Stun not working

The passive tree note "Heavy Contact", which states "hits that heavy stun have culling strike", does not work properly.

I have a passive tree focused on stun build up and heavy stun every white monster with either one leap slam or one sunder.
I oneshot most whie mobs, but some survive with like 5% hp while also being heavy stunned. Cull on white mobs should be 30%, so they should be dead.

+1

Bump. Can confirm.

Edit: I am annoiting it, idk if that matters

+1

+1

having same issue heavy stuns don't cull when they should with the passive heavy contact

having this working would be massive difference in my game play

per the tooltip in game - culling strike checks for hp before the hit. so the enemy has to be beneath culling threshold when the culling hit connects.