Search Issue Tracker

Fixed in 2021.2.X



Found in





Issue ID




Nested prefabs lose changes made to their object after saving when parent is unpacked and nested prefab is modified then undone

Scene Management


How to reproduce:
1. Create a new empty 3D Project
2. Add a Cube to the Scene and Save
3. Add a Sphere to the Scene and Save
4. Make the "Sphere" object a Prefab and Save
5. Add any Component to the "Sphere "object in the Hierarchy and Save
6. Drag the "Sphere" object in the Hierarchy and make it a child of the "Cube" object and Save
7. Make the "Cube" object a Prefab
8. Unpack the "Cube" object in the Hierarchy (Not Completely)
9. Modify the "Sphere" object in the Scene in any way
10. Press Undo
11. Select the "Sphere" object in the Hierarchy

Expected result: Only Step#9 was undone
Actual result: The Component added in Step#5 was undone

Reproducible with: 2020.2.0a10, 2020.3.18f1, 2021.1.0a1, 2021.1.19f1, 2021.2.0a1, 2021.2.0a10
Not reproducible: 2019.4.31f1, 2020.1.0a25, 2020.2.0a9, 2020.3.19f1, 2020.3.21f1, 2021.1.20f1, 2021.1.26f1, 2021.2.0a11, 2022.1.0a12

  1. Resolution Note (fix version 2021.2):

    Fixed in: 2020.3.19f1, 2021.1.20f1, 2021.2.0a11

Add comment

Log in to post comment

All about bugs

View bugs we have successfully reproduced, and vote for the bugs you want to see fixed most urgently.