I have a Rigify-generated Armature, and I wanted to put Constraints on all of the Fingers so that I could instantly make a Fist with the character.
This seemed like it would be simple: a Copy Scale Constraint on the fingers would do the trick. I placed the Constraint on the Finger, and when I move the controlling Bone, the finger Bone does indeed Scale, but for some reason the Rigify finger does not clench when you're using a Constraint.
Below is a screencap of the issue. If anybody could explain and, hopefully, provide a solution, that would be great.