[Bug report] Constraint profile problem

I tried to make the dismemberment system of the characters in my project. But I have a problem with the constraints profile. I used Set Constraint Profile for bones of my skeletal mesh. But it not works.

I was very surprised! And I created new empty project with simple skeletal mesh for checking.
Yes, I’m in shock. I am absolutely convinced. It really is broken.

I am posting this project in this messages.
Project have

  • simple skeletal mesh: three joints and three cubes, with Free profile
  • simple pawn with linetrace for set constraint profile

WASD - moving

Mouse - Looking

LMB - add impulse

RMB - set constraint profile Free, add impulse

BugConstraint.zip
[link text][4]

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Thanks