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Fixed in 2022.3.13f1, 2023.2.0b18, 2023.3.0a12



Found in



Issue ID




Crash and or slow update when List items are reordered in the Inspector Window



Reproduction steps:
1. Open the attached project “ReproProject”
2. In the Hierarchy Window, select the “Main Camera” GameObject
3. In the Inspector Window, reorder the list items (snow and iron) in the attached Demo (Script) Component
4. Observe the editor’s behaviour

Expected result: The List items are reordered Instantly
Actual result: Unity crashes, or the Inspector Window takes more time to update the reordering changes

Reproducible with: 2022.3.5f1, 2022.3.7f1, 2023.1.4f1, 2023.1.8f1, 2023.2.0b3
Not Reproducible with: 2021.3.29f1, 2022.3.4f1, 2023.1.0a1, 2023.1.3f1

Testing environment: macOS(Intel) 13.4.1

First few lines of the stack trace:
{{at <unknown> <0xffffffff> at UnityEditor.SerializedProperty:MoveArrayElementInternal <0x0009e> at UnityEditor.SerializedProperty:MoveArrayElement <0x000f2> at UnityEditorInternal.ReorderableList:DoDraggingAndSelection <0x021ca> at UnityEditorInternal.ReorderableList:DoListElements <0x02a6a> at UnityEditorInternal.ReorderableList:DoList <0x007d2> at UnityEditorInternal.ReorderableListWrapper:DrawChildren <0x00b32> at UnityEditorInternal.ReorderableListWrapper:Draw <0x013ca> at UnityEditor.PropertyHandler:OnGUI <0x0136a> at UnityEditor.PropertyHandler:OnGUI <0x0013a> at UnityEditor.PropertyHandler:OnGUI <0x01baa> at UnityEditor.PropertyHandler:OnGUI <0x0013a> at Defaults:DrawElement <0x002c2> at }}

Note: The crash might not occur at the first time of reordering.

Comments (2)

  1. marc_twirlbound

    Sep 12, 2023 15:10

    Can we get an update on this? I'm working on 2022.3.7f1 which is an LTS version and every time I reorder a list the engine crashes. Do you recommend that I downgrade my LTS version so I can at least use lists or is this big regression going to be fixed very soon? Thanks

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