I am doing my first rigging in Blender. I am following this and this youtube videos.
My armature looks like this from the front view:
When I move the inverse kinematics "target bone" up in the z-axis, it moves like seen in the screen shot below. I want the knee to move directly towards to the "pole target", but instead it slightly strays away from it.
My inverse kinematics settings are like this:
My copy constraint settings are like this:
How do I make the knee bend towards strictly to the forward direction where the target bone resides?
Edit: This is my current design file.