Unreal Engine Issues

UE-190731

Full Body IK does not work properly when root bone has large scale

Full Body IK does not work properly when root bone has large scale

Description

FBIK becomes extremely unstable when the root bone scale has a value other than 1.

 

Steps to Reproduce
  1. open repro project
  2. open SK_Mannequin_CtrlRig
  3. move hand_l_ctrl ( red sphere )

expect : fbik work properly
result : Each bone of the mannequin moves erratically

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Won't Fix
ComponentUE - Anim - Rigging - Control Rig
Affects Versions5.1, 5.2
Target Fix5.4
CreatedJul 20, 2023
ResolvedAug 10, 2023
UpdatedAug 14, 2023