Root Movement with Additive Layers

I have a Gun Layer, which is the top layer, and i have the second layer which is called "Base Layer" cause it was the default one, everything works fine as i wanted it, i want the Gun Layer to override Base Layer, and still have the second layer going, by using additive layer. That works perfect.

Except, the root movement, i use the default (slightly customized), ThirdPersonCharacter.cs which comes from the Character Asset which you can easily get from the default assets.

The player does not move, but the character moves, i use the default animations for movement, and i use custom animations for my Gun Layer animations.

Animator.deltaPosition returns (0, 0, 0) whenever i use the second layer additive, but not when i have the second layer as the top layer.

All layers have the weight set to 1.

Here is a video of what happens: https://youtu.be/4kuBkaPIFkA