Attempt for bind spectre fleshpierce

Good morning, I'm trying to bind the spectre for the minion Fleshpierce in The Khari Crossing, but every attempt results in the Spectre Plague Harvester. Is this feature bugged? I'm playing on Xbox, version 0.3.0b, off-season in Standard mode.

It's not bugged they have fixed this as they did not intend to have this spectre/companion. And even if you managed to get it before the patch it's converted to Plague harvester now. You can find this info in patch notes. It was unintented to have the hidden haste/phys aura on these rare beasts.