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Fixed in 2022.1.X

Fixed in 2020.3.X, 2021.1.X, 2021.2.X

Votes

0

Found in

2020.2.0a10

2020.3

2021.1

2021.1.7f1

2021.2

Issue ID

1339775

Regression

Yes

Unpacked prefabs added to a prefab instance are removed when Undoing any change made to main prefab

Scene Management

-

How to reproduce:
1. Open attached project "case_775_repro.zip"
2. Open "Cube variant" prefab in Prefab Mode
3. In the Prefab Mode, add "Cylinder" prefab to the Hierarchy window
4. Unpack the added prefab
5. Select "Cube variant" in the Hierarchy & edit the X value of the Transform component
6. Undo

Expected result: Unpacked prefab is not removed
Actual result: Unpacked prefab is removed

Reproducible with - 2020.2.0a10, 2020.3.12f1, 2021.1.12f1, 2021.2.0a21
Not reproducible with - 2018.4.36f1, 2019.4.27f1, 2020.2.0a9

  1. Resolution Note (fix version 2022.1):

    Fixed in 2022.1.0a6

  2. Resolution Note (fix version 2021.2):

    Fixed in 2021.2.0b10

  3. Resolution Note (fix version 2021.1):

    Fixed in 2021.1.20f1

  4. Resolution Note (fix version 2020.3):

    Fixed in 2020.3.19f1

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