Beat on the brat Kabuki (the twins)

[EmSay]

Hi all, I have a strange bug, and I was wondering if someone did have the same so he/she could help me before I deinstall all my mod.
Here it is, during the Beat on the brat Kabuki mission, after I punch one of the twin, their life get stuck and never go down again no matter how many hits they take, they become invincible.

So if someone know what cause this bug, I would appreciate the magic answer, otherwise, I'll check all my mods later.