Why are RigidbodyConstraints applied in world space?

I'm really wondering as I can't find a good reason for that or at least not to have the possibility to choose ^^"
Especially because I remember it being calculated in local space in certain Unity versions :O

 

Up.
Sorry but this is really bugging me as I couldn't find a good example on how to achieve this, unless I use joints, that are ridiculously resource expensive.

 

That's how PhysX delivers it. Unfortunately, there's nothing we or Unity can do about that.

Here's the description of that feature in the PhysX docs:
https://docs.nvidia.com/gameworks/c...de/Manual/RigidBodyDynamics.html#axis-locking