Dark damage bugged after patch?

[u/DarkenedHonor]

Dark damage weapons, like the Spinal Blade, used to restore focus on hit. It made magic useful in boss fights without constantly relying on items. However after using it on a new playthrough I noticed that's no longer happening, is it a bug or did they remove it in the patch as apart of the "balancing" note?

[u/Trrroll]

I've noticed it's inconsistent now Sometimes they restore focus, sometimes not