[Help] Blender Blenrig6 - mesh distorted when rotating

The mesh is distorted whenever i tried to rotate the master_body bone.

Left is after rotating and right is the starting pose

What is the cause of this? I didnt see anyone mention this issue and i’m stuck on this

Hi, i am not familiar with this rig but by comparing the left image to the right image it looks like the knees are twisting.
It could also be that the wights on your mesh are not done properly.
Try moving the master control to one side and see if the mesh is stretching.

it should be parent “obj” stuff like Cage deform, Lattice, etc is not parent propely. . try to movin that root char into another position to checking