Bone chains frozen when using Auto IK and X-Axis Mirror #106410

Open
opened 2023-04-01 03:21:22 +02:00 by Dvorakir · 3 comments

System Information
Operating system: Windows-10-10.0.19044-SP0 64 Bits
Graphics card: NVIDIA GeForce GTX 1070 Ti/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 531.29

Blender Version
Broken: version: 3.5.0, branch: blender-v3.5-release, commit date: 2023-03-29 02:56, hash: 1be25cfff18b
Worked: Has happened for as long as I remember

Short description of error
Disabling X-Axis Mirror while using Auto IK can cause a mirrored bone chain to become "locked" and not movable with Auto IK.
The "locked" bone will be highlighted in orange both when trying to move a child bone in the chain as well as moving a bone on the mirrored chain.

Seems to be the same issue as #75810, even down to the same steps to reproduce

trying to move the locked chain moving the mirrored chain
image image

Exact steps for others to reproduce the error
Open the attached blend and enter pose mode, then:

  1. Select the Arm.L bone
  2. enable X-Axis Mirror
  3. Rotate the Arm.L bone slightly
  4. disable X-Axis Mirror
  5. Try grabbing the Arm.R.002 bone and move it
    Result: bone chain is locked in place
**System Information** Operating system: Windows-10-10.0.19044-SP0 64 Bits Graphics card: NVIDIA GeForce GTX 1070 Ti/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 531.29 **Blender Version** Broken: version: 3.5.0, branch: blender-v3.5-release, commit date: 2023-03-29 02:56, hash: `1be25cfff18b` Worked: Has happened for as long as I remember **Short description of error** Disabling X-Axis Mirror while using Auto IK can cause a mirrored bone chain to become "locked" and not movable with Auto IK. The "locked" bone will be highlighted in orange both when trying to move a child bone in the chain as well as moving a bone on the mirrored chain. Seems to be the same issue as #75810, even down to the same steps to reproduce | trying to move the locked chain | moving the mirrored chain | | -- | -- | | ![image](/attachments/7706929f-aec3-4fcf-8894-b68c70e5cf4d) | ![image](/attachments/ca237a84-754a-4f01-a176-bb4436454d02) | **Exact steps for others to reproduce the error** Open the attached blend and enter pose mode, then: 1. Select the `Arm.L` bone 2. enable X-Axis Mirror 3. Rotate the `Arm.L` bone slightly 4. disable X-Axis Mirror 5. Try grabbing the `Arm.R.002` bone and move it Result: bone chain is locked in place
Dvorakir added the
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Normal
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labels 2023-04-01 03:21:23 +02:00
Iliya Katushenock added the
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Animation & Rigging
label 2023-04-01 11:10:02 +02:00

Hello, I can't reproduce the lock.

Hello, I can't reproduce the lock.
Author

Try this file, where the bone has already been locked
Moving the Arm.R.002 bone should not be possible

Try this file, where the bone has already been locked Moving the `Arm.R.002` bone should not be possible
Member

I can repro. You have to move the base bone of the chain to cause the lock, as demoed in the video. Moving the child doesn't cause the lock.

I can repro. You have to move the base bone of the chain to cause the lock, as demoed in the video. Moving the child doesn't cause the lock.
Nathan Vegdahl added
Type
Bug
and removed
Type
Report
labels 2023-05-01 11:20:11 +02:00
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Reference: blender/blender#106410
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