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Weird oscillations in parented rigid body simulation
Open, Needs Triage by DeveloperPublic


System Information
Operating system: Windows-10-10.0.16299 64 Bits
Graphics card: GeForce GTX 1070/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 416.16

Blender Version
Broken: version: 2.81 (sub 1), branch: master, commit date: 2019-08-03 10:22, hash: rB5e5cf9ea9f7b
Worked: 2.79

Short description of error
Weird oscillations in parented rigid body simulation

Exact steps for others to reproduce the error

  1. Start blender, copy-paste the cube, move Cube.001 so they're both next to each other
  2. Make both cubes as rigid bodies
  3. Set Cube type to 'Passive'
  4. Make Cube the parent of Cube.001
  5. Play animation
  6. Expected: Cube.001 falls down
  7. Actual: Cube.001 rapidly oscillates between the starting position and the falling position



Event Timeline

Gabor Horvath (hgabor47) claimed this task.

I found this with Rigid Body Constraints. The connected parts oscillate between the orig pos and the cached animate position.