Unity Issue Tracker - Applying changes to root prefab in a nested prefab re-adds a component earlier removed in another nested prefab

Fixed in 2018.4

Fixed in 2019.2, 2019.3

Votes

0

Found in

2018.4.0f1

2019.2.0a1

2019.2.5f1

2019.3.0a1

2020.1.0a1

Issue ID

1185746

Regression

No

Applying changes to root prefab in a nested prefab re-adds a component earlier removed in another nested prefab

Scene Management

Sep 20, 2019

How to reproduce:
1. Open the attached project
2. Open the "SampleScene" scene
3. Remove Mesh Renderer component of Cube > Sphere
4. Apple changes on the Cube prefab
5. Create Capsule GO as children of the Cube
6. Apply changes to the Cube prefab

Actual result: The Sphere's Mesh Renderer component gets added back to the prefab.
Expected result: The Sphere's Mesh Renderer component stays removed.

Reproducible with: 2020.1.0a5, 2019.3.0b4, 2019.2.7f2, 2018.4.10f1.

Notes:
- Nested prefabs are not implemented in Unity 2017.4.

----------------
Fixed in 2020.1.0a19, 2019.3.0f6, 2019.2.19f1, 2018.4.16f1.

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