Pain Offering: cannot sacrifice the skeleton Spectre

note: This bug may have a common cause of reproduction with this bug report:
Pain Offering with Unwilling Offering passive doesnt work on some monster types

Skill description:
Skewer a Skeleton on a bone spike to send nearby Minions into a frenzy as long as the spike remains, making their skills faster and harder hitting. The bone spike is itself a Minion. If it dies, the effect ends immediately.

— I tried sacrificing one of Skeleton Spectre (Risen Maraketh), which have a Minion and Persistent tags, but the Offering is not created.