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Found in [Package]

0.2.1-preview, 0.2.5-preview

Issue ID




[AnimationRigging] GameObject snaps into place until its Root is moved when using an Animation Job

Package: Animation Rigging


How to reproduce:
1. Open the attached project's "" Scene labeled "SampleScene"
2. Enter the Play Mode

Expected result: Cube chain doesn't snap into place
Actual result: Cube chain snaps into place

Reproducible with: 2019.2.16f1, 2019.3.0f3, 2020.1.0a16 (0.2.1-preview, 0.2.5-preview)
Couldn't test with: 2017.4.35f1 (Package Manager does not exist), 2018.4.14f1 (Animation Rigging does not exist)

  1. Response avatar

    Resolution Note:

    The JiggleChain constraint script used in this project has a calculation which ends up setting NaN values in the rotation. This is not something that can be prevented by Animation Rigging, but should be directly addressed in the script itself.

    More specifically, the method `JiggleChainJob.FromTo` results in (NaN, NaN, NaN, 1f) quaternions in the initial setup. Moving the root hierarchy changes the chain values slightly and may just bypass the issue.

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