Just Dire Things helmet upgrade Mental Obliteration not working

[Gretzai]

Modpack

FTB StoneBlock 4

Modpack version

1.0.8

Launcher

CurseForge

Describe the bug

I crafted the Eclipse alloy armor and the upgrades, everything works but the helmets Mental Obliteration upgrade.

Steps to reproduce

1. Craft the Eclipse helmet and the Mental Obliteration upgrade.
2. Add the upgrade on the helmet with a smithing tabel.
3. If not active open the item GUI and activate by right clicking.
4. Walk near a mob and nothing happens.

Log Files

No response

Expected behaviour

When near a mob they should stop moving and not attack the player.

Has the pack been modified

No

Additional information

No response

[DinnerBeef]

This is not a passive effect. From the guidebook.