Editing additive pose in control rig node breaks bones transform

[maslenok]

Hi. in anim graph i want to edit additive pose (for scale additive delta and other tweaks) in control rig node node. But i noticed if even control rig graph is empty, output pose has changed and warped transforms.
Here is example: i have simple additive pose graph with connected or disconnected control rig node. Control rig graph is empty. logically, there should be no difference between two variants.

This is bug? Or additive poses not supported for conrol rig?

[maslenok]

problem solved! Control rig for some reson break pose if root bone scale equals zero. Just set root bone scale to 1 before connect pin to control rig, and reset to zero scale after control rig.