Bone shrinks mysteriously under the influence of an IK Constraint I tried setting up inverse kinematics on a very simple test character rig and the bone went all crazy. It shrinks the leg to a stump when the IK Constraint's influence is at 1. I've set it to 0.5 so you can see what's happening, and still select it. It also can't be grabbed.



My experience with rigging is limited, but still it's surprising to see this bizarre result. Please explain to me what's causing this.
In the bone IK constraint, try to disable weight influence for position, leave it only for rotation. You can restore influence to 1.0 as is probably needed for rotation.