I’m running into a bit of trouble with trying to get my RBF setup to work in IK. I’m using deformer joints as the driver. “upperarm_l”, “lowerarm_l”, etc. Everything works correctly in FK mode, but doesn’t behave as expected when switching to IK. I’m using the UE Mannequin template so I’m thinking it has something to do with twist being added to the X and Y axes instead of just Z which throws off the pose. Is there something I’m misunderstanding about how RBF works? Video of the issue below.
