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Won't Fix
Votes
2
Found in
2017.4
2018.4
2019.2
2019.2.4f1
2019.3
2020.1
Issue ID
1198350
Regression
No
Field Serialization in OnValidate method fails due to not being properly marked as dirty
How to reproduce:
1. Open attached project "Unity Bug With Dirty Data.zip" and scene "SampleScene"
2. In Hierarchy select "Move Right Prefabbed - Autopopulate"
3. In Inspector check that the "MoveRightAutoPopulate" -> "My RB" value is not null
4. Enter Play mode
5. Observe the red cubes and "MoveRightAutoPopulate" -> "My RB" value
Expected result: all the red cubes are moving and the "My RB" value is not null
Actual result: one of the red cubes is not moving and the "My RB" value is null
Reproducible with: 2017.4.35f1, 2018.4.13f1, 2019.2.14f1, 2019.3.0f1, 2020.1.0a14
Workaround:
In OnValidate method, force to serialize the gameobject with
UnityEditor.EditorUtility.SetDirty(this);
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Resolution Note:
Accessing other objects and marking scenes dirty during OnValidate has undefined behavior and should be avoided. OnValidate is only allowed access the object it is called on.