PhysicsConstraint break controller

I have a problem with my controller and the PhysicsConstraint
I can take a cube and keep it with a PhysicsConstraint
And when I have another character go on the block and being moved by another character, all the controls break

I displayed the inputs on the screen to see that they were reversed
Z moves down instead of up, S moves up instead of down, Q moves right instead of left and D moves left instead of right