I am a rigging noob and i tried to rig this simple setup here:
Just 3 bones, nothing special, last bone has IK.
The only "special" is, that the bones are limited to rotate around z.
The IK has target to the cube, which describes a simple circle.
Why is the rig behaving that wild!? In my opinion it could simple stay in on shape and just rotate? So obviously i made a total dumb mistake here...