Frequency: ??
Monster name: Twintania
Area and coordinates: Coil 5
Steps:
1. When twintania is approaching her final phase at 30%, and twintania is trying to jail someone she will keep jailing people even if the dreadknight is dead in her final phase until everyone is dead.

I can provide footage of this if needed.

This bug occurred to our group once, and did not even want to try to replicate it.