Bug BotH + bonespear

ever since the new set masqueradefor necromancer came, ive used it, with the same build everytime, bone spear with the shatter rune.
and with boon of the hoarder, its always been a shower of gold.
however in this season, something has changed.
now its rare that a monster explodes in gold.
its seems like only the monsters that are directly killed by my bonespear will explode in gold, monsters killed via area damage or bonespears from simulacrums, dosent get affectedby boon of the hoarder.

am i doing something wrong ?

Pets don’t cause the gold to fall (Sims) and also if anything is getting killed by clones (from pylons) you won’t get gold drop for that either.

Only for enemies directly killed by you.

Not a bug.