Dreadknight unresponsive/frozen

Time: Coil 5 - Twintania
Frequency: 100%
Monster name: Dreadknight
Steps:
1. Walk up to a dreadknight/close ranged, attack it/get aggro to get its attention
2. Twintania must jail the person trying to bug the dreadknight (luck factor)
3. The dreadknight will immediately freeze and become unresponsive because it appears to be trying to attack/target a person who is jailed and will NEVER use its one hit KO ability.

The dreadknight will become unresponsive and additional dreadknights will NOT spawn.

I can provide additional footage how to replicate this if necessary.