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Fixed in 2018.3

Fixed in 2018.2

Votes

0

Found in

2018.1.6f1

2018.2.0b4

Issue ID

1059467

Regression

Yes

Quaternion.LookRotation breaks rotation physics when parented with a moving object

Physics

-

How to reproduce:
1. Open user-submitted project (SpringBug)
2. Enter Play Mode
3. Press the 'space' key to parent and unparent the 'SpringObject_Broken' with the 'Sphere' GameObject

Expected result: the spring remains aligned with the sphere after some toggling
Actual result: the end of the spring jitters around the sphere slightly after some toggling

Reproducible with: 2018.1.6f1, 2018.1.9f1, 2018.2.0b4, 2018.2.0f2, 2018.3.0a5
Not reproducible with: 2017.1.4p2, 2017.2.3p2, 2017.4.7f1, 2018.1.5f1, 2018.2.0b3

Notes:
'SpringObject_Fixed' GameObject can be used for comparison to see how the physics should actually behave

Comments (3)

  1. 9c9cd9798ac75b12233dae29b293fbce?d=mm

    AG_Dan

    Sep 20, 2018 00:46

    FYI according to the release notes this issue has been fixed in 2018.2.8f1 (see: https://unity3d.com/unity/whatsnew/unity-2018.2.8)

  2. A4e61e9d8ec63e884f05b8174c88e43a?d=mm

    viceca

    Aug 27, 2018 05:54

    this is still an issue on 2018.2.5f1!

  3. 68374e98f3c43615ef06417ea95065f7?d=mm

    Marcos-Elias

    Aug 02, 2018 06:17

    Do you know when there will be a patch for this? This is very severe!

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