List items wrongly initialized in the Inspector when values are declared in the constructor

Unity: Serialization

As Designed

2023.3.X

2023.2.X

2022.3.X

2021.3.X

Thank you for reporting a bug to Unity. When the first element is added to an array via SerializedProperty it is allocated by zeroing the memory rather than calling the constructor. And when adding additional elements it copies the previous element. We will consider changing that behavior as part of future quality improvement work in the area of SerializedObject/SerializedProperty but also wary of any possible performance and backward compatibility impact for changing this behaviour. Today we will be closing this case. Thank you again for taking the time to report this issue

How to reproduce:
1. Open the attached project "90_develop.zip"
2. Select "Test" in the Inspector window
3. Add a new Element to the "Items" list in the Inspector window

Expected results: "Var 1" and Var 2" are set to "10" and "20"
Actual results: "Var 1" and Var 2" are both set to "0"

Reproducible with: 2021.3.33f1, 2022.3.14f1, 2023.2.2f1, 2023.3.0a16

Reproducible on: Windows 11 22H2
Not reproducible on: No other environment tested

List items wrongly initialized in the Inspector when values are declared in the constructor

Unity: Serialization

As Designed

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List items wrongly initialized in the Inspector when values are declared in the constructor

Unity: Serialization

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As Designed

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Description

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Have a workaround or additional info about this issue?