Can't rotate constraints in Phyisics Asset

I try to rotate the last constraint in my physics asset, but it rotates in a wierd way. The skeleton is imported from blender. I dont know I imported in a wrong way from blender, or I just miss some hotkey. I’m not an animator, so I assume it’s a noobish question, but I hope you can point me to the right direction.

This is how the rotation looks like. I try to rotate the last constrain, but this happens:

291921-constrainsrotate3.gif

And this is the skelton tree. You can see the selected constraint is the last one, but event the rotator is in the wrong place:

291922-constarintshighlight.png

UPDATE: I realized, if I “reset” the constraint it snaps to the rotator. Why?

As usually I just solved the issue myself. The thing is you need to hold down ALT, to rotate the constraints. The thing what made me confused that I watched an older tutorial, and there was no need to hold down the alt key, and the result looked differently, so I though I did something wrong.