Occurs 3/3 times.

Skeletal mesh with ragdoll physics applied exhibits sporadic motion after ragdoll physics is initiated. 

Regression does occur: When tested in //UE4/Release-4.27.2 @ CL18319896 no additional movement occurs on character mesh when ragdoll physics event is invoked.

Note: When the licensee experienced sporadic movement with character mesh with ragdoll physics, they were able to stop the additional movement by selecting 'Defer Kinematic Bone Update' and by setting 'Kinematic Bones Update Type to 'Skip Simulating Bones.'

Steps to Reproduce

Repro Steps:

  1. Create a TPS blank template project.
  2. Create a Physics Asset from the SK_Mannequin skeletal mesh found in /Game/Content/Mannequin/Character/Mesh, by right clicking the asset and selecting 'Physics Asset > Create and Assign.
  3. In the ThirdPersonCharacter BP create a custom Ragdoll event where (see screenshot):
    • Ragdoll collision physics is set on the Character Mesh.
    • Pressing K (or any letter) on the keyboard triggers a ragdoll collision event.
  4. Set the Mesh in the ThirdPersonCharacter BP to 'Ragdoll' in the collision presets.
  5. Compile the BP.
  6. PIE.
  7. Move the TP character around and then invoke ragdoll with the keypress.

Expected: TP Character collapses and stops moving.
Actual: Character sporadically moves once ragdoll collision is initiated. 


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Cannot Reproduce
ComponentUE - Simulation - Physics - Character
Affects Versions5.0.1
Target Fix5.1
CreatedMay 3, 2022
ResolvedSep 5, 2022
UpdatedSep 7, 2022