Self controlled trophy problem

[holland046]

Hi. 

I have a problem with the self controlled trophy. 

I see how the decoy gets killed by my ability or how you want to call it but the trophy won't pop. 

 

I tried everything from the YouTube videos and the comments. 

There was a glitch where the challenge already was unlocked before the bossfight but that's not the case. 

 

Anyone had the same problem?

Ive tried over 20 times and at least 15 times it should have unlocked. 

The rest of the trophies unlocked like supposed to from the dlc.