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Fixed in 2021.1.X

Fixed in 2019.4.X, 2020.2.X



Found in





Issue ID




Variables use old overridden values on Prefabs when a variable has FormerlySerializedAs attribute

Scene Management


How to reproduce:
1. Open the user's attached "SerializationTest" project
2. Open the Scene "SampleScene"
3. Select the "TestObject" GameObject
4. In the Inspector observe the "Test Script" "New Name" variable

Expected results: The "New Name" variable's value is "OVERIDDEN NEW VALUE!"
Actual results: The "New Name" variable's value is "OVERIDDEN OLD VALUE!"

Reproducible with:2019.4.16f1, 2020.1.12f1, 2020.1.16f1, 2020.2.0b10, 2020.2.0b14, 2021.1.0a8
Not reproducible with: 2018.4.30f1, 2019.4.15f1, 2020.1.0a1, 2020.1.11f1, 2020.2.0a1, 2020.2.0b9

- Steps to reproduce this issue from scratch:
1. Create a Prefab and attach script with "public string oldTest = "A";" line to the Prefab
2. Add the Prefab to the Scene and in the Inspector change the variable's value to "OLD"
3. In the script add "[FormerlySerializedAs("oldTest")]" before the previous added line and change the variable's "oldTest" name to "newTest"
4. In the Inspector change the variable's value to "NEW"
5. Restart the Editor, the value will be "OLD" in the Prefab's that's in the Scene

  1. Resolution Note (fix version 2021.1):

    Fixed in 2021.1.0b4

  2. Resolution Note (fix version 2020.2):

    Fixed in 2020.2.3f1

  3. Resolution Note (fix version 2019.4):

    Fixed in 2019.4.19f1

Comments (1)

  1. friuns

    Jan 04, 2021 13:30

    in my project
    Reproduced in 2019.4.15f1
    not reproduced in 2020.1.13f1

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