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Fixed in 2020.1.X
Fixed in 2018.4.X, 2019.3.X
Votes
1
Found in
2018.4.14f1
2018.4.15f1
2019.2.14f1
2019.3.0f1
2020.1.0a11
Issue ID
1213249
Regression
Yes
Prefab Hierarchy is reordered after upgrading a project to a newer version of Unity
How to reproduce:
1. Download the user-submitted package(PrefabTestPackage.unitypackage)
2. Create a new Unity project with one of the versions, marked as 'Not reproducible'
3. Import the package
4. Open the Assets\GUI\Controls\BasePrefabs\EscapeMenuPrefabs\NewSaveSlot.prefab
5. Note the order of the prefab hierarchy(UITab is in the 3rd position)
6. Close the project and open it in one of the versions, marked as 'Reproducible'
7. Open the Assets\GUI\Controls\BasePrefabs\EscapeMenuPrefabs\NewSaveSlot.prefab again
8. Note the order of the prefab hierarchy
Expected result: hierarchy order remains the same(UITab is in the 3rd position)
Actual result: hierarchy order has changed(UITab is in the 5th position)
Reproducible with: 2018.4.14f1, 2018.4.16f1, 2019.2.14f1, 2019.2.19f1, 2019.3.0f1, 2019.3.0f6, 2020.1.0a11, 2020.1.0a20
Not reproducible with: 2018.4.13f1, 2019.2.0a1, 2019.2.13f1, 2019.3.0a1, 2019.3.0b12, 2020.1.0a1, 2020.1.0a10
Could not test with: 2017.4.36f1(Old prefab system is used)
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Resolution Note (fix version 2020.1):
Fixed in 2020.1.0a22
Resolution Note (fix version 2019.3):
Fixed in 2019.3.5f1
Resolution Note (fix version 2018.4):
Fixed in 2018.4.18f1