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Fixed in 2020.2.X

Votes

0

Found in

2018.4

2019.4

2020.2

2021.1

2021.1.0a9

Issue ID

1298200

Regression

No

Prefab's thumbnail isn't updated when shader is modified

Asset Import Pipeline

-

How to reproduce it:
1. Open attached project '1298200.zip'
2. Open the 'Presents' > 'Prefabs' folder in the Project view
3. Select the 'present_01' Prefab
4. In the Inspector view, change Shader drop-down menu's value to 'Standard'
5. Click on the Inspector view's preview and observe it
6. Observe the 'present_01' Prefab's thumbnail in the Project view

Expected result: In the Project view, Prefab's thumbnail is automatically updated and displays Prefab with pink material
Actual result: In the Project view, the Prefab's thumbnail isn't updated, and the Prefab's material remains unchanged

Reproducible with: 2018.4.30f1, 2019.4.17f1, 2020.2.1f1, 2021.1.0b1

Workaround:
- Right-click on the Project view and click 'Reimport All'
- In 2020.1.17f1 and lower versions, it is not necessary to reimport the whole project. It is enough to reimport selected Prefabs

  1. Response avatar

    Resolution Note (fix version 2020.2):

    So this is change in behavior!
    When user changes the Material - that is in-memory change and it is not written to disc immediately. To write changes to disc user have to press menu File->Save Project (was always like that).
    Previously to get an updated preview it was enough to "Reimport" the asset, but that was a bug. The new behavior is that user changes the Material, then press menu File->Save Project and at this point gets updated preview for the Prefab using that Material.

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