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Fixed in 2021.2.X

Fixed in 2019.4.X, 2020.3.X, 2021.1.X



Found in




Issue ID




Duplicating a Prefab instance in the Scene will cause instances of the same Prefab to be disabled and re-enabled

Scene Management


How to reproduce:
1. Open the user's attached "" project
2. Open the "SampleScene" Scene
3. Expand all the GameObjects in the Hierarchy window
4. Right-click on the "Cube(7)" GameObject
5. Press on the "Duplicate" menu item
6. Observe the Console log

Expected result: OnEnable function is called only for the newly created instance
Actual result: OnDisable and OnEnable functions are called for all GameObjects (including prefab instances) in the same transform hierarchy as the duplicated instance.

Reproducible with: 2018.4.26f1, 2019.4.8f1, 2020.1.2f1, 2020.2.0a20

- The issue is also reproducible if copy and paste shortcuts are pressed on the keyboard while the Prefab instance is still selected in the Hierarchy window, but doesn't reproduce if after copying the instance, it is unselected and then pasted

  1. Resolution Note (fix version 2021.2):

    Fixed in: 2021.2.0a13

  2. Resolution Note (fix version 2021.1):

    Fixed in: 2021.1.6f1

  3. Resolution Note (fix version 2020.3):

    Fixed in: 2020.3.8f1

  4. Resolution Note (fix version 2019.4):

    Fixed in: 2019.4.27f1

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