Knockout Black Corsair Thralls on Siptah

I know this has been asked many times and I know that some say this is fixed and some still have the issue.

I am playing on the PS5.

I started on a private PVE Server on Siptah and was able to knockout Black Corsair Fighters and Workers.

Other settings on this server made me leave and create a Coop World where me and my brother can play along.

Same spot/camp, same thralls and I wasnt able to knockout anyone. Not even the bar showed up

What am I doing wrong​?

My settings are close to vanilla/official server. I only changed the durability to 0.2 and the timer​ for respawn​s