Unreal Engine Issues

UE-64984

Snap to Bone only updates the UI in the PHat Editor - Constraints still modified when simulated

Snap to Bone only updates the UI in the PHat Editor - Constraints still modified when simulated

Description

Even though the constraint appears to be snapped to the bone in the Editor, when it simulates, the skeletal mesh behaves like it was pulled apart

I noticed this while verifying [Link Removed]. Even though snapping looks like the constraint is back to an upright position, it still simulates like it was modified.

Steps to Reproduce
  1. Open a BP Third Person project
  2. Open the 3rd Person template project
  3. Open the SK_Mannequin_PhysicsAsset
  4. Select the Constraint foot_l : calf_l
  5. Start and stop simulate to see how the constraint is expected to react
  6. Move the Constraint away from the skeletal mesh
  7. Start and stop simulate to see how the constraint reacts
  8. Right-click the constraint in the Graph > Snap
  9. Start and stop simulate to see how the constraint reacts

Results: The skeletal mesh still simulates the same way it did before the Snap

Expected: The skeletal mesh simulates like it did before the Constraints were modified

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Backlogged
ComponentUE - Simulation - Physics
Affects Versions4.21
CreatedOct 9, 2018
ResolvedAug 10, 2021
UpdatedSep 21, 2022
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