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Unity freezes while applying prefab when the scene has multiple Box Collider 2D

Scene Management


Reproduction steps:
1. Download project "" and open in Unity
2. Open scene "Bug"
3. Select "Prefab" in Hierarchy
4. Click Apply in Inspector tab

Expected: prefab is applied and Unity works normally
Actual: Unity becomes unresponsive

Reproduced on: 5.6.0a5; 5.6.3p3; 2017.1.1p2; 2017.2.0f1; 2017.3.0b1
Not reproduced on: 5.5.4p4; 5.6.0a4
Regression introduced: 5.6.0a5

Note: this happens when there are multiple Box Collider 2D in the scene

  1. This is a duplicate of issue #939502

    Prefabs update causes Unity to freeze

Comments (1)

  1. TapSkill

    Jan 21, 2018 04:30

    I can confirm that this issue exists in v5.6.3p1, which is the required version of Unity for VRChat currently. Is there a workaround to apply rig mapping changes?

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